20151525415 has 16 divisors (see below), whose sum is σ = 27681198912. Its totient is φ = 13795778304.

The previous prime is 20151525349. The next prime is 20151525421. The reversal of 20151525415 is 51452515102.

It is not a de Polignac number, because 20151525415 - 2⁷ = 20151525287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 444984 + ... + 488173.

It is an arithmetic number, because the mean of its divisors is an integer number (1730074932).

Almost surely, 2^20151525415 is an apocalyptic number.

20151525415 is a deficient number, since it is larger than the sum of its proper divisors (7529673497).

20151525415 is an equidigital number, since it uses as much as digits as its factorization.

20151525415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 933786.

The product of its (nonzero) digits is 10000, while the sum is 31.

The spelling of 20151525415 in words is "twenty billion, one hundred fifty-one million, five hundred twenty-five thousand, four hundred fifteen".