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25023300020 = 2253265338317
BaseRepresentation
bin10111010011100000…
…010100000110110100
32101120220202100102122
4113103200110012310
5402221431100040
615255012055112
71544046353315
oct272340240664
971526670378
1025023300020
11a681000744
124a24304498
13248a303a04
1412d54d060c
159b6c761b5
hex5d38141b4

25023300020 has 24 divisors (see below), whose sum is σ = 52551910824. Its totient is φ = 10008752256.

The previous prime is 25023299969. The next prime is 25023300047. The reversal of 25023300020 is 2000332052.

It can be written as a sum of positive squares in 4 ways, for example, as 2844942244 + 22178357776 = 53338^2 + 148924^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 633902 + ... + 672218.

It is an arithmetic number, because the mean of its divisors is an integer number (2189662951).

Almost surely, 225023300020 is an apocalyptic number.

25023300020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25023300020 is an abundant number, since it is smaller than the sum of its proper divisors (27528610804).

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

25023300020 is a wasteful number, since it uses less digits than its factorization.

25023300020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70979 (or 70977 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 17.

Adding to 25023300020 its reverse (2000332052), we get a palindrome (27023632072).

The spelling of 25023300020 in words is "twenty-five billion, twenty-three million, three hundred thousand, twenty".

Divisors: 1 2 4 5 10 20 32653 38317 65306 76634 130612 153268 163265 191585 326530 383170 653060 766340 1251165001 2502330002 5004660004 6255825005 12511650010 25023300020