1256624132 has 12 divisors (see below), whose sum is σ = 2206920156. Its totient is φ = 626075520.

The previous prime is 1256624099. The next prime is 1256624137. The reversal of 1256624132 is 2314266521.

It can be written as a sum of positive squares in 2 ways, for example, as 292273216 + 964350916 = 17096^2 + 31054^2 .

It is not an unprimeable number, because it can be changed into a prime (1256624137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 557873 + ... + 560120.

It is an arithmetic number, because the mean of its divisors is an integer number (183910013).

Almost surely, 2^1256624132 is an apocalyptic number.

It is an amenable number.

1256624132 is a deficient number, since it is larger than the sum of its proper divisors (950296024).

1256624132 is a wasteful number, since it uses less digits than its factorization.

1256624132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1118278 (or 1118276 counting only the distinct ones).

The product of its digits is 17280, while the sum is 32.

The square root of 1256624132 is about 35448.8946513146. The cubic root of 1256624132 is about 1079.1168282790.

The spelling of 1256624132 in words is "one billion, two hundred fifty-six million, six hundred twenty-four thousand, one hundred thirty-two".