15255115556 has 6 divisors (see below), whose sum is σ = 26696452230. Its totient is φ = 7627557776.

The previous prime is 15255115517. The next prime is 15255115571. The reversal of 15255115556 is 65551155251.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 8330212900 + 6924902656 = 91270^2 + 83216^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1906889441 + ... + 1906889448.

It is an arithmetic number, because the mean of its divisors is an integer number (4449408705).

Almost surely, 2^15255115556 is an apocalyptic number.

It is an amenable number.

15255115556 is a deficient number, since it is larger than the sum of its proper divisors (11441336674).

15255115556 is a wasteful number, since it uses less digits than its factorization.

15255115556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3813778893 (or 3813778891 counting only the distinct ones).

The product of its digits is 187500, while the sum is 41.

The spelling of 15255115556 in words is "fifteen billion, two hundred fifty-five million, one hundred fifteen thousand, five hundred fifty-six".