1125556356 has 24 divisors (see below), whose sum is σ = 2630978784. Its totient is φ = 374516800.

The previous prime is 1125556351. The next prime is 1125556357. The reversal of 1125556356 is 6536555211.

It is a super-2 number, since 2×1125556356² = 2533754221063997472, which contains 22 as substring.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1125556351) 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, 76545 + ... + 90056.

It is an arithmetic number, because the mean of its divisors is an integer number (109624116).

Almost surely, 2^1125556356 is an apocalyptic number.

It is an amenable number.

1125556356 is an abundant number, since it is smaller than the sum of its proper divisors (1505422428).

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

1125556356 is a wasteful number, since it uses less digits than its factorization.

1125556356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167171 (or 167169 counting only the distinct ones).

The product of its digits is 135000, while the sum is 39.

The square root of 1125556356 is about 33549.3123029370. The cubic root of 1125556356 is about 1040.2133302514.

The spelling of 1125556356 in words is "one billion, one hundred twenty-five million, five hundred fifty-six thousand, three hundred fifty-six".