1156625054521 has 16 divisors (see below), whose sum is σ = 1228175254800. Its totient is φ = 1085466912768.

The previous prime is 1156625054509. The next prime is 1156625054537. The reversal of 1156625054521 is 1254505266511.

It can be written as a sum of positive squares in 8 ways, for example, as 53860921 + 1156571193600 = 7339^2 + 1075440^2 .

It is a cyclic number.

It is not a de Polignac number, because 1156625054521 - 2⁷ = 1156625054393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1156625054621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23868565 + ... + 23916973.

It is an arithmetic number, because the mean of its divisors is an integer number (76760953425).

Almost surely, 2^{1156625054521} is an apocalyptic number.

It is an amenable number.

1156625054521 is a deficient number, since it is larger than the sum of its proper divisors (71550200279).

1156625054521 is a wasteful number, since it uses less digits than its factorization.

1156625054521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52428.

The product of its (nonzero) digits is 360000, while the sum is 43.

The spelling of 1156625054521 in words is "one trillion, one hundred fifty-six billion, six hundred twenty-five million, fifty-four thousand, five hundred twenty-one".