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25050025028 = 2271761214143
BaseRepresentation
bin10111010101000110…
…010000110001000100
32101122210001010020202
4113111012100301010
5402300301300103
615301404550032
71544522461640
oct272506206104
971583033222
1025050025028
11a6950a4626
124a31252318
132492a00122
1412d8c89c20
159b92a4988
hex5d5190c44

25050025028 has 72 divisors (see below), whose sum is σ = 53934806016. Its totient is φ = 9937866240.

The previous prime is 25050025027. The next prime is 25050025051. The reversal of 25050025028 is 82052005052.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25050025027) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1764125 + ... + 1778267.

It is an arithmetic number, because the mean of its divisors is an integer number (749094528).

Almost surely, 225050025028 is an apocalyptic number.

25050025028 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25050025028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26967403008).

25050025028 is an abundant number, since it is smaller than the sum of its proper divisors (28884780988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25050025028 is a wasteful number, since it uses less digits than its factorization.

25050025028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14293 (or 14230 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 29.

The spelling of 25050025028 in words is "twenty-five billion, fifty million, twenty-five thousand, twenty-eight".

Divisors: 1 2 4 7 14 17 28 34 61 68 119 122 238 244 427 476 854 1037 1708 2074 3721 4148 7259 7442 14143 14518 14884 26047 28286 29036 52094 56572 63257 99001 104188 126514 198002 240431 253028 396004 442799 480862 862723 885598 961724 1683017 1725446 1771196 3366034 3450892 6039061 6732068 12078122 14666291 24156244 29332582 52626103 58665164 102664037 105252206 205328074 210504412 368382721 410656148 736765442 894643751 1473530884 1789287502 3578575004 6262506257 12525012514 25050025028