20015373625 has 16 divisors (see below), whose sum is σ = 26900664336. Its totient is φ = 14780582400.

The previous prime is 20015373617. The next prime is 20015373643. The reversal of 20015373625 is 52637351002.

It can be written as a sum of positive squares in 8 ways, for example, as 13639670521 + 6375703104 = 116789^2 + 79848^2 .

It is not a de Polignac number, because 20015373625 - 2³ = 20015373617 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6156952 + ... + 6160201.

It is an arithmetic number, because the mean of its divisors is an integer number (1681291521).

Almost surely, 2^20015373625 is an apocalyptic number.

20015373625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20015373625 is a deficient number, since it is larger than the sum of its proper divisors (6885290711).

20015373625 is a wasteful number, since it uses less digits than its factorization.

20015373625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12317181 (or 12317171 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 34.

The spelling of 20015373625 in words is "twenty billion, fifteen million, three hundred seventy-three thousand, six hundred twenty-five".