25781152 has 24 divisors (see below), whose sum is σ = 51060996. Its totient is φ = 12813312.

The previous prime is 25781143. The next prime is 25781177. The reversal of 25781152 is 25118752.

It can be written as a sum of positive squares in 2 ways, for example, as 25765776 + 15376 = 5076^2 + 124^2 .

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, 3208 + ... + 7864.

Almost surely, 2^25781152 is an apocalyptic number.

It is an amenable number.

25781152 is a deficient number, since it is larger than the sum of its proper divisors (25279844).

25781152 is a wasteful number, since it uses less digits than its factorization.

25781152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4840 (or 4832 counting only the distinct ones).

The product of its digits is 5600, while the sum is 31.

The square root of 25781152 is about 5077.5143525154. The cubic root of 25781152 is about 295.4160633029.

The spelling of 25781152 in words is "twenty-five million, seven hundred eighty-one thousand, one hundred fifty-two".