1255017879 has 12 divisors (see below), whose sum is σ = 1815227232. Its totient is φ = 835560000.

The previous prime is 1255017871. The next prime is 1255017893. The reversal of 1255017879 is 9787105521.

1255017879 is a `hidden beast` number, since 1 + 2 + 5 + 501 + 78 + 79 = 666.

1255017879 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1255017879 - 2³ = 1255017871 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255017871) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 86082 + ... + 99599.

It is an arithmetic number, because the mean of its divisors is an integer number (151268936).

Almost surely, 2^1255017879 is an apocalyptic number.

1255017879 is a deficient number, since it is larger than the sum of its proper divisors (560209353).

1255017879 is a wasteful number, since it uses less digits than its factorization.

1255017879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186438 (or 186435 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 45.

The square root of 1255017879 is about 35426.2315099984. The cubic root of 1255017879 is about 1078.6568462111.

The spelling of 1255017879 in words is "one billion, two hundred fifty-five million, seventeen thousand, eight hundred seventy-nine".