1256887252 has 12 divisors (see below), whose sum is σ = 2200063936. Its totient is φ = 628297560.

The previous prime is 1256887201. The next prime is 1256887271. The reversal of 1256887252 is 2527886521.

It is a super-2 number, since 2×1256887252² = 3159531128480223008, which contains 22 as substring.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15858 + ... + 52585.

Almost surely, 2^1256887252 is an apocalyptic number.

It is an amenable number.

1256887252 is a deficient number, since it is larger than the sum of its proper divisors (943176684).

1256887252 is a wasteful number, since it uses less digits than its factorization.

1256887252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73038 (or 73036 counting only the distinct ones).

The product of its digits is 537600, while the sum is 46.

The square root of 1256887252 is about 35452.6057152362. The cubic root of 1256887252 is about 1079.1921404845.

The spelling of 1256887252 in words is "one billion, two hundred fifty-six million, eight hundred eighty-seven thousand, two hundred fifty-two".