20725100515 has 48 divisors (see below), whose sum is σ = 29310932160. Its totient is φ = 14025580800.

The previous prime is 20725100507. The next prime is 20725100563. The reversal of 20725100515 is 51500152702.

It is not a de Polignac number, because 20725100515 - 2³ = 20725100507 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8882289 + ... + 8884621.

It is an arithmetic number, because the mean of its divisors is an integer number (610644420).

Almost surely, 2^20725100515 is an apocalyptic number.

20725100515 is a deficient number, since it is larger than the sum of its proper divisors (8585831645).

20725100515 is a wasteful number, since it uses less digits than its factorization.

20725100515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2812 (or 2805 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 28.

The spelling of 20725100515 in words is "twenty billion, seven hundred twenty-five million, one hundred thousand, five hundred fifteen".