1252656136 has 32 divisors (see below), whose sum is σ = 2387926080. Its totient is φ = 615960000.

The previous prime is 1252656133. The next prime is 1252656137. The reversal of 1252656136 is 6316562521.

It is a junction number, because it is equal to n+sod(n) for n = 1252656095 and 1252656104.

It is not an unprimeable number, because it can be changed into a prime (1252656133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116875 + ... + 127141.

It is an arithmetic number, because the mean of its divisors is an integer number (74622690).

Almost surely, 2^1252656136 is an apocalyptic number.

It is an amenable number.

1252656136 is a deficient number, since it is larger than the sum of its proper divisors (1135269944).

1252656136 is a wasteful number, since it uses less digits than its factorization.

1252656136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10525 (or 10521 counting only the distinct ones).

The product of its digits is 64800, while the sum is 37.

The square root of 1252656136 is about 35392.8825613286. The cubic root of 1252656136 is about 1077.9798014259.

The spelling of 1252656136 in words is "one billion, two hundred fifty-two million, six hundred fifty-six thousand, one hundred thirty-six".