25506472 has 16 divisors (see below), whose sum is σ = 47878740. Its totient is φ = 12738816.

The previous prime is 25506463. The next prime is 25506487. The reversal of 25506472 is 27460552.

It can be written as a sum of positive squares in 2 ways, for example, as 24265476 + 1240996 = 4926^2 + 1114^2 .

It is a super-2 number, since 2×25506472² = 1301160227773568, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11398 + ... + 13450.

Almost surely, 2^25506472 is an apocalyptic number.

It is an amenable number.

25506472 is a deficient number, since it is larger than the sum of its proper divisors (22372268).

25506472 is a wasteful number, since it uses less digits than its factorization.

25506472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3612 (or 3608 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 25506472 is about 5050.3932520151. The cubic root of 25506472 is about 294.3631651398.

The spelling of 25506472 in words is "twenty-five million, five hundred six thousand, four hundred seventy-two".