1255610556 has 18 divisors (see below), whose sum is σ = 3173904552. Its totient is φ = 418536840.

The previous prime is 1255610539. The next prime is 1255610557. The reversal of 1255610556 is 6550165521.

1255610556 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 34878071 = 1255610556 / (1 + 2 + 5 + 5 + 6 + 1 + 0 + 5 + 5 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 1255610556.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255610557) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17439000 + ... + 17439071.

Almost surely, 2^1255610556 is an apocalyptic number.

It is an amenable number.

1255610556 is an abundant number, since it is smaller than the sum of its proper divisors (1918293996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1255610556 is a wasteful number, since it uses less digits than its factorization.

1255610556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34878081 (or 34878076 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 36.

The square root of 1255610556 is about 35434.5954682708. The cubic root of 1255610556 is about 1078.8266165668.

The spelling of 1255610556 in words is "one billion, two hundred fifty-five million, six hundred ten thousand, five hundred fifty-six".