25540804 has 12 divisors (see below), whose sum is σ = 45904684. Its totient is φ = 12425184.

The previous prime is 25540777. The next prime is 25540819. The reversal of 25540804 is 40804552.

It can be written as a sum of positive squares in 2 ways, for example, as 15618304 + 9922500 = 3952^2 + 3150^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86139 + ... + 86434.

Almost surely, 2^25540804 is an apocalyptic number.

It is an amenable number.

25540804 is a deficient number, since it is larger than the sum of its proper divisors (20363880).

25540804 is a wasteful number, since it uses less digits than its factorization.

25540804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172614 (or 172612 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 28.

The square root of 25540804 is about 5053.7910522696. The cubic root of 25540804 is about 294.4951779779.

The spelling of 25540804 in words is "twenty-five million, five hundred forty thousand, eight hundred four".