215064131525 has 24 divisors (see below), whose sum is σ = 271837226304. Its totient is φ = 168748876800.

The previous prime is 215064131479. The next prime is 215064131549. The reversal of 215064131525 is 525131460512.

It is not a de Polignac number, because 215064131525 - 2¹⁴ = 215064115141 is a prime.

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 23 ways as a sum of consecutive naturals, for example, 28682 + ... + 656468.

It is an arithmetic number, because the mean of its divisors is an integer number (11326551096).

Almost surely, 2^215064131525 is an apocalyptic number.

215064131525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

215064131525 is a deficient number, since it is larger than the sum of its proper divisors (56773094779).

215064131525 is a wasteful number, since it uses less digits than its factorization.

215064131525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628061 (or 628056 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 35.

The spelling of 215064131525 in words is "two hundred fifteen billion, sixty-four million, one hundred thirty-one thousand, five hundred twenty-five".