25551215552 has 14 divisors (see below), whose sum is σ = 50703193488. Its totient is φ = 12775607744.

The previous prime is 25551215531. The next prime is 25551215563.

25551215552 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199618808 + ... + 199618935.

Almost surely, 2^25551215552 is an apocalyptic number.

It is an amenable number.

25551215552 is a deficient number, since it is larger than the sum of its proper divisors (25151977936).

25551215552 is an equidigital number, since it uses as much as digits as its factorization.

25551215552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399237755 (or 399237745 counting only the distinct ones).

The product of its digits is 125000, while the sum is 38.

The spelling of 25551215552 in words is "twenty-five billion, five hundred fifty-one million, two hundred fifteen thousand, five hundred fifty-two".