20150551525 has 24 divisors (see below), whose sum is σ = 26950228200. Its totient is φ = 14857463040.

The previous prime is 20150551513. The next prime is 20150551543. The reversal of 20150551525 is 52515505102.

It can be written as a sum of positive squares in 12 ways, for example, as 15379472196 + 4771079329 = 124014^2 + 69073^2 .

It is not a de Polignac number, because 20150551525 - 2¹¹ = 20150549477 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, 164751 + ... + 259699.

It is an arithmetic number, because the mean of its divisors is an integer number (1122926175).

Almost surely, 2^20150551525 is an apocalyptic number.

20150551525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20150551525 is a deficient number, since it is larger than the sum of its proper divisors (6799676675).

20150551525 is a wasteful number, since it uses less digits than its factorization.

20150551525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95625 (or 95620 counting only the distinct ones).

The product of its (nonzero) digits is 12500, while the sum is 31.

The spelling of 20150551525 in words is "twenty billion, one hundred fifty million, five hundred fifty-one thousand, five hundred twenty-five".