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25157130 = 235838571
BaseRepresentation
bin101111111110…
…1111000001010
31202100010002120
41133331320022
522420012010
62255112110
7423555255
oct137757012
952303076
1025157130
1113222a19
128512636
13529a89b
1434ac09c
15231de70
hex17fde0a

25157130 has 16 divisors (see below), whose sum is σ = 60377184. Its totient is φ = 6708560.

The previous prime is 25157117. The next prime is 25157131. The reversal of 25157130 is 3175152.

It is a self number, because there is not a number n which added to its sum of digits gives 25157130.

It is not an unprimeable number, because it can be changed into a prime (25157131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 419256 + ... + 419315.

It is an arithmetic number, because the mean of its divisors is an integer number (3773574).

Almost surely, 225157130 is an apocalyptic number.

25157130 is an abundant number, since it is smaller than the sum of its proper divisors (35220054).

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

25157130 is a wasteful number, since it uses less digits than its factorization.

25157130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 838581.

The product of its (nonzero) digits is 1050, while the sum is 24.

The square root of 25157130 is about 5015.6883874499. The cubic root of 25157130 is about 293.0130960533.

The spelling of 25157130 in words is "twenty-five million, one hundred fifty-seven thousand, one hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 838571 1677142 2515713 4192855 5031426 8385710 12578565 25157130