25397937 has 12 divisors (see below), whose sum is σ = 36835344. Its totient is φ = 16863000.

The previous prime is 25397923. The next prime is 25397951. The reversal of 25397937 is 73979352.

It is an interprime number because it is at equal distance from previous prime (25397923) and next prime (25397951).

It is not a de Polignac number, because 25397937 - 2⁴ = 25397921 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25397892 and 25397901.

It is not an unprimeable number, because it can be changed into a prime (25397987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3363 + ... + 7880.

It is an arithmetic number, because the mean of its divisors is an integer number (3069612).

Almost surely, 2^25397937 is an apocalyptic number.

It is an amenable number.

25397937 is a deficient number, since it is larger than the sum of its proper divisors (11437407).

25397937 is a wasteful number, since it uses less digits than its factorization.

25397937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11500 (or 11497 counting only the distinct ones).

The product of its digits is 357210, while the sum is 45.

The square root of 25397937 is about 5039.6365940413. The cubic root of 25397937 is about 293.9450473441.

It can be divided in two parts, 253979 and 37, that added together give a square (254016 = 504²).

The spelling of 25397937 in words is "twenty-five million, three hundred ninety-seven thousand, nine hundred thirty-seven".