15255553256 has 8 divisors (see below), whose sum is σ = 28604162370. Its totient is φ = 7627776624.

The previous prime is 15255553223. The next prime is 15255553277. The reversal of 15255553256 is 65235555251.

It can be written as a sum of positive squares in only one way, i.e., 14408161156 + 847392100 = 120034^2 + 29110^2 .

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, 953472071 + ... + 953472086.

Almost surely, 2^15255553256 is an apocalyptic number.

It is an amenable number.

15255553256 is a deficient number, since it is larger than the sum of its proper divisors (13348609114).

15255553256 is a wasteful number, since it uses less digits than its factorization.

15255553256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1906944163 (or 1906944159 counting only the distinct ones).

The product of its digits is 1125000, while the sum is 44.

The spelling of 15255553256 in words is "fifteen billion, two hundred fifty-five million, five hundred fifty-three thousand, two hundred fifty-six".