2156051520525 has 24 divisors (see below), whose sum is σ = 4073910683584. Its totient is φ = 985623552000.

The previous prime is 2156051520503. The next prime is 2156051520551. The reversal of 2156051520525 is 5250251506512.

It is not a de Polignac number, because 2156051520525 - 2⁶ = 2156051520461 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2053381876 + ... + 2053382925.

Almost surely, 2^{2156051520525} is an apocalyptic number.

2156051520525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2156051520525 is a deficient number, since it is larger than the sum of its proper divisors (1917859163059).

2156051520525 is a wasteful number, since it uses less digits than its factorization.

2156051520525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4106764821 (or 4106764816 counting only the distinct ones).

The product of its (nonzero) digits is 150000, while the sum is 39.

The spelling of 2156051520525 in words is "two trillion, one hundred fifty-six billion, fifty-one million, five hundred twenty thousand, five hundred twenty-five".