25397307 has 40 divisors (see below), whose sum is σ = 41469120. Its totient is φ = 15396480.

The previous prime is 25397297. The next prime is 25397311. The reversal of 25397307 is 70379352.

It is a happy number.

It is not a de Polignac number, because 25397307 - 2⁷ = 25397179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25397347) 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 39 ways as a sum of consecutive naturals, for example, 93582 + ... + 93852.

It is an arithmetic number, because the mean of its divisors is an integer number (1036728).

Almost surely, 2^25397307 is an apocalyptic number.

25397307 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

25397307 is a deficient number, since it is larger than the sum of its proper divisors (16071813).

25397307 is a wasteful number, since it uses less digits than its factorization.

25397307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385 (or 376 counting only the distinct ones).

The product of its (nonzero) digits is 39690, while the sum is 36.

The square root of 25397307 is about 5039.5740891468. The cubic root of 25397307 is about 293.9426168723.

The spelling of 25397307 in words is "twenty-five million, three hundred ninety-seven thousand, three hundred seven".