1125257656 has 16 divisors (see below), whose sum is σ = 2118916800. Its totient is φ = 560213184.

The previous prime is 1125257647. The next prime is 1125257671. The reversal of 1125257656 is 6567525211.

It is a super-2 number, since 2×1125257656² = 2532409584773228672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 299976 + ... + 303703.

It is an arithmetic number, because the mean of its divisors is an integer number (132432300).

Almost surely, 2^1125257656 is an apocalyptic number.

It is an amenable number.

1125257656 is a deficient number, since it is larger than the sum of its proper divisors (993659144).

1125257656 is a wasteful number, since it uses less digits than its factorization.

1125257656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603918 (or 603914 counting only the distinct ones).

The product of its digits is 126000, while the sum is 40.

The square root of 1125257656 is about 33544.8603514756. The cubic root of 1125257656 is about 1040.1213048841.

The spelling of 1125257656 in words is "one billion, one hundred twenty-five million, two hundred fifty-seven thousand, six hundred fifty-six".