25797478 has 32 divisors (see below), whose sum is σ = 46851840. Its totient is φ = 10406880.

The previous prime is 25797469. The next prime is 25797481. The reversal of 25797478 is 87479752.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77773 + ... + 78103.

It is an arithmetic number, because the mean of its divisors is an integer number (1464120).

Almost surely, 2^25797478 is an apocalyptic number.

25797478 is a deficient number, since it is larger than the sum of its proper divisors (21054362).

25797478 is a wasteful number, since it uses less digits than its factorization.

25797478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652.

The product of its digits is 987840, while the sum is 49.

The square root of 25797478 is about 5079.1217744803. The cubic root of 25797478 is about 295.4784078787.

The spelling of 25797478 in words is "twenty-five million, seven hundred ninety-seven thousand, four hundred seventy-eight".