1255560957 has 36 divisors (see below), whose sum is σ = 2113032636. Its totient is φ = 716325120.

The previous prime is 1255560899. The next prime is 1255560979. The reversal of 1255560957 is 7590655521.

1255560957 is a `hidden beast` number, since 1 + 2 + 5 + 556 + 0 + 95 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 668274201 + 587286756 = 25851^2 + 24234^2 .

It is not a de Polignac number, because 1255560957 - 2¹⁶ = 1255495421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255560157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 331957 + ... + 335717.

It is an arithmetic number, because the mean of its divisors is an integer number (58695351).

Almost surely, 2^1255560957 is an apocalyptic number.

It is an amenable number.

1255560957 is a deficient number, since it is larger than the sum of its proper divisors (857471679).

1255560957 is a wasteful number, since it uses less digits than its factorization.

1255560957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4538 (or 4528 counting only the distinct ones).

The product of its (nonzero) digits is 472500, while the sum is 45.

The square root of 1255560957 is about 35433.8955944728. The cubic root of 1255560957 is about 1078.8124111468.

The spelling of 1255560957 in words is "one billion, two hundred fifty-five million, five hundred sixty thousand, nine hundred fifty-seven".