25220515052 has 12 divisors (see below), whose sum is σ = 44391023376. Its totient is φ = 12537365520.

The previous prime is 25220515049. The next prime is 25220515069. The reversal of 25220515052 is 25051502252.

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, 18222224 + ... + 18223607.

It is an arithmetic number, because the mean of its divisors is an integer number (3699251948).

Almost surely, 2^25220515052 is an apocalyptic number.

It is an amenable number.

25220515052 is a deficient number, since it is larger than the sum of its proper divisors (19170508324).

25220515052 is a wasteful number, since it uses less digits than its factorization.

25220515052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36446008 (or 36446006 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 29.

The spelling of 25220515052 in words is "twenty-five billion, two hundred twenty million, five hundred fifteen thousand, fifty-two".