25317898 has 4 divisors (see below), whose sum is σ = 37976850. Its totient is φ = 12658948.

The previous prime is 25317889. The next prime is 25317923. The reversal of 25317898 is 89871352.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 20133169 + 5184729 = 4487^2 + 2277^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6329473 + ... + 6329476.

Almost surely, 2^25317898 is an apocalyptic number.

25317898 is a deficient number, since it is larger than the sum of its proper divisors (12658952).

25317898 is a wasteful number, since it uses less digits than its factorization.

25317898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12658951.

The product of its digits is 120960, while the sum is 43.

The square root of 25317898 is about 5031.6893783301. The cubic root of 25317898 is about 293.6359431652.

The spelling of 25317898 in words is "twenty-five million, three hundred seventeen thousand, eight hundred ninety-eight".