1015255555 has 12 divisors (see below), whose sum is σ = 1294189200. Its totient is φ = 764426624.

The previous prime is 1015255537. The next prime is 1015255561. The reversal of 1015255555 is 5555525101.

It is not a de Polignac number, because 1015255555 - 2²¹ = 1013158403 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1015255555.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 349855 + ... + 352744.

It is an arithmetic number, because the mean of its divisors is an integer number (107849100).

Almost surely, 2^1015255555 is an apocalyptic number.

1015255555 is a deficient number, since it is larger than the sum of its proper divisors (278933645).

1015255555 is an equidigital number, since it uses as much as digits as its factorization.

1015255555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702638 (or 702621 counting only the distinct ones).

The product of its (nonzero) digits is 31250, while the sum is 34.

The square root of 1015255555 is about 31863.0751026953. The cubic root of 1015255555 is about 1005.0595428531.

The spelling of 1015255555 in words is "one billion, fifteen million, two hundred fifty-five thousand, five hundred fifty-five".