1252208556 has 18 divisors (see below), whose sum is σ = 3165305052. Its totient is φ = 417402840.

The previous prime is 1252208537. The next prime is 1252208557. The reversal of 1252208556 is 6558022521.

It is a happy number.

1252208556 is a `hidden beast` number, since 1 + 2 + 522 + 0 + 85 + 56 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 34783571 = 1252208556 / (1 + 2 + 5 + 2 + 2 + 0 + 8 + 5 + 5 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 1252208556.

It is not an unprimeable number, because it can be changed into a prime (1252208557) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17391750 + ... + 17391821.

Almost surely, 2^1252208556 is an apocalyptic number.

It is an amenable number.

1252208556 is an abundant number, since it is smaller than the sum of its proper divisors (1913096496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1252208556 is a wasteful number, since it uses less digits than its factorization.

1252208556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34783581 (or 34783576 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

The square root of 1252208556 is about 35386.5589737120. The cubic root of 1252208556 is about 1077.8513970268.

The spelling of 1252208556 in words is "one billion, two hundred fifty-two million, two hundred eight thousand, five hundred fifty-six".