20625057615 has 16 divisors (see below), whose sum is σ = 33002039808. Its totient is φ = 10999381536.

The previous prime is 20625057601. The next prime is 20625057623. The reversal of 20625057615 is 51675052602.

It is not a de Polignac number, because 20625057615 - 2¹⁴ = 20625041231 is a prime.

It is a congruent number.

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, 333022 + ... + 390068.

It is an arithmetic number, because the mean of its divisors is an integer number (2062627488).

Almost surely, 2^20625057615 is an apocalyptic number.

20625057615 is a deficient number, since it is larger than the sum of its proper divisors (12376982193).

20625057615 is a wasteful number, since it uses less digits than its factorization.

20625057615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81158.

The product of its (nonzero) digits is 126000, while the sum is 39.

The spelling of 20625057615 in words is "twenty billion, six hundred twenty-five million, fifty-seven thousand, six hundred fifteen".