25398525 has 24 divisors (see below), whose sum is σ = 42576640. Its totient is φ = 13357440.

The previous prime is 25398521. The next prime is 25398533. The reversal of 25398525 is 52589352.

It is not a de Polignac number, because 25398525 - 2² = 25398521 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25398521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3156 + ... + 7794.

Almost surely, 2^25398525 is an apocalyptic number.

25398525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25398525 is a deficient number, since it is larger than the sum of its proper divisors (17178115).

25398525 is a wasteful number, since it uses less digits than its factorization.

25398525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4725 (or 4720 counting only the distinct ones).

The product of its digits is 108000, while the sum is 39.

The square root of 25398525 is about 5039.6949312434. The cubic root of 25398525 is about 293.9473157482.

The spelling of 25398525 in words is "twenty-five million, three hundred ninety-eight thousand, five hundred twenty-five".