25540804552 has 8 divisors (see below), whose sum is σ = 47889008550. Its totient is φ = 12770402272.

The previous prime is 25540804507. The next prime is 25540804603.

25540804552 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 24669728356 + 871076196 = 157066^2 + 29514^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1596300277 + ... + 1596300292.

Almost surely, 2^25540804552 is an apocalyptic number.

It is an amenable number.

25540804552 is a deficient number, since it is larger than the sum of its proper divisors (22348203998).

25540804552 is a wasteful number, since it uses less digits than its factorization.

25540804552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3192600575 (or 3192600571 counting only the distinct ones).

The product of its (nonzero) digits is 320000, while the sum is 40.

The spelling of 25540804552 in words is "twenty-five billion, five hundred forty million, eight hundred four thousand, five hundred fifty-two".