25998975 has 60 divisors (see below), whose sum is σ = 49603224. Its totient is φ = 13452480.

The previous prime is 25998971. The next prime is 25998983. The reversal of 25998975 is 57989952.

It is not a de Polignac number, because 25998975 - 2² = 25998971 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25998971) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 74752 + ... + 75098.

Almost surely, 2^25998975 is an apocalyptic number.

25998975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25998975 is a deficient number, since it is larger than the sum of its proper divisors (23604249).

25998975 is a wasteful number, since it uses less digits than its factorization.

25998975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406 (or 392 counting only the distinct ones).

The product of its digits is 2041200, while the sum is 54.

The square root of 25998975 is about 5098.9190030829. The cubic root of 25998975 is about 296.2457137659.

The spelling of 25998975 in words is "twenty-five million, nine hundred ninety-eight thousand, nine hundred seventy-five".