25500157 has 4 divisors (see below), whose sum is σ = 25529920. Its totient is φ = 25470396.

The previous prime is 25500151. The next prime is 25500229. The reversal of 25500157 is 75100552.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25500157 - 2³ = 25500149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25500151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13557 + ... + 15322.

It is an arithmetic number, because the mean of its divisors is an integer number (6382480).

Almost surely, 2^25500157 is an apocalyptic number.

It is an amenable number.

25500157 is a deficient number, since it is larger than the sum of its proper divisors (29763).

25500157 is an equidigital number, since it uses as much as digits as its factorization.

25500157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29762.

The product of its (nonzero) digits is 1750, while the sum is 25.

The square root of 25500157 is about 5049.7680144735. The cubic root of 25500157 is about 294.3388699097.

The spelling of 25500157 in words is "twenty-five million, five hundred thousand, one hundred fifty-seven".