25297398 has 48 divisors (see below), whose sum is σ = 65944320. Its totient is φ = 6846768.

The previous prime is 25297387. The next prime is 25297409. The reversal of 25297398 is 89379252.

25297398 is a `hidden beast` number, since 252 + 9 + 7 + 398 = 666.

It is an interprime number because it is at equal distance from previous prime (25297387) and next prime (25297409).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2890 + ... + 7677.

It is an arithmetic number, because the mean of its divisors is an integer number (1373840).

Almost surely, 2^25297398 is an apocalyptic number.

25297398 is an abundant number, since it is smaller than the sum of its proper divisors (40646922).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25297398 is a wasteful number, since it uses less digits than its factorization.

25297398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10601 (or 10598 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 25297398 is about 5029.6518766213. The cubic root of 25297398 is about 293.5566690453.

The spelling of 25297398 in words is "twenty-five million, two hundred ninety-seven thousand, three hundred ninety-eight".