1252686556 has 12 divisors (see below), whose sum is σ = 2391492600. Its totient is φ = 569402960.

The previous prime is 1252686553. The next prime is 1252686577. The reversal of 1252686556 is 6556862521.

It is a super-2 number, since 2×1252686556² = 3138447215166282272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252686553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14235031 + ... + 14235118.

It is an arithmetic number, because the mean of its divisors is an integer number (199291050).

Almost surely, 2^1252686556 is an apocalyptic number.

It is an amenable number.

1252686556 is a deficient number, since it is larger than the sum of its proper divisors (1138806044).

1252686556 is a wasteful number, since it uses less digits than its factorization.

1252686556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28470164 (or 28470162 counting only the distinct ones).

The product of its digits is 864000, while the sum is 46.

The square root of 1252686556 is about 35393.3123061405. The cubic root of 1252686556 is about 1077.9885273854.

The spelling of 1252686556 in words is "one billion, two hundred fifty-two million, six hundred eighty-six thousand, five hundred fifty-six".