25997607 has 12 divisors (see below), whose sum is σ = 39761280. Its totient is φ = 16312128.

The previous prime is 25997599. The next prime is 25997611. The reversal of 25997607 is 70679952.

It is not a de Polignac number, because 25997607 - 2³ = 25997599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25997677) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84807 + ... + 85112.

It is an arithmetic number, because the mean of its divisors is an integer number (3313440).

Almost surely, 2^25997607 is an apocalyptic number.

25997607 is a deficient number, since it is larger than the sum of its proper divisors (13763673).

25997607 is a wasteful number, since it uses less digits than its factorization.

25997607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169942 (or 169939 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 45.

The square root of 25997607 is about 5098.7848552376. The cubic root of 25997607 is about 296.2405177759.

The spelling of 25997607 in words is "twenty-five million, nine hundred ninety-seven thousand, six hundred seven".