2152011511525 has 6 divisors (see below), whose sum is σ = 2668494274322. Its totient is φ = 1721609209200.

The previous prime is 2152011511511. The next prime is 2152011511547. The reversal of 2152011511525 is 5251151102512.

It can be written as a sum of positive squares in 3 ways, for example, as 233368218724 + 1918643292801 = 483082^2 + 1385151^2 .

It is not a de Polignac number, because 2152011511525 - 2¹³ = 2152011503333 is a prime.

It is a super-2 number, since 2×2152011511525² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 43040230206 + ... + 43040230255.

Almost surely, 2^{2152011511525} is an apocalyptic number.

2152011511525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2152011511525 is a deficient number, since it is larger than the sum of its proper divisors (516482762797).

2152011511525 is an equidigital number, since it uses as much as digits as its factorization.

2152011511525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86080460471 (or 86080460466 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 31.

The spelling of 2152011511525 in words is "two trillion, one hundred fifty-two billion, eleven million, five hundred eleven thousand, five hundred twenty-five".