2156450057525 has 24 divisors (see below), whose sum is σ = 2719539956160. Its totient is φ = 1695782915840.

The previous prime is 2156450057521. The next prime is 2156450057539. The reversal of 2156450057525 is 5257500546512.

It is not a de Polignac number, because 2156450057525 - 2² = 2156450057521 is a prime.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 2156450057525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156450057521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20646584 + ... + 20750766.

It is an arithmetic number, because the mean of its divisors is an integer number (113314164840).

Almost surely, 2^{2156450057525} is an apocalyptic number.

2156450057525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2156450057525 is a deficient number, since it is larger than the sum of its proper divisors (563089898635).

2156450057525 is a wasteful number, since it uses less digits than its factorization.

2156450057525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118285 (or 118280 counting only the distinct ones).

The product of its (nonzero) digits is 2100000, while the sum is 47.

The spelling of 2156450057525 in words is "two trillion, one hundred fifty-six billion, four hundred fifty million, fifty-seven thousand, five hundred twenty-five".