25395657 has 16 divisors (see below), whose sum is σ = 40381440. Its totient is φ = 13880592.

The previous prime is 25395649. The next prime is 25395661. The reversal of 25395657 is 75659352.

It is not a de Polignac number, because 25395657 - 2³ = 25395649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25395157) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25807 + ... + 26772.

It is an arithmetic number, because the mean of its divisors is an integer number (2523840).

Almost surely, 2^25395657 is an apocalyptic number.

It is an amenable number.

25395657 is a deficient number, since it is larger than the sum of its proper divisors (14985783).

25395657 is a wasteful number, since it uses less digits than its factorization.

25395657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52612.

The product of its digits is 283500, while the sum is 42.

The square root of 25395657 is about 5039.4103821777. The cubic root of 25395657 is about 293.9362511603.

The spelling of 25395657 in words is "twenty-five million, three hundred ninety-five thousand, six hundred fifty-seven".