20725942615 has 32 divisors (see below), whose sum is σ = 31680184320. Its totient is φ = 12672059904.

The previous prime is 20725942579. The next prime is 20725942651. The reversal of 20725942615 is 51624952702.

It is an interprime number because it is at equal distance from previous prime (20725942579) and next prime (20725942651).

It is not a de Polignac number, because 20725942615 - 2⁷ = 20725942487 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 905367 + ... + 927976.

It is an arithmetic number, because the mean of its divisors is an integer number (990005760).

Almost surely, 2^20725942615 is an apocalyptic number.

20725942615 is a deficient number, since it is larger than the sum of its proper divisors (10954241705).

20725942615 is a wasteful number, since it uses less digits than its factorization.

20725942615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1833391.

The product of its (nonzero) digits is 302400, while the sum is 43.

The spelling of 20725942615 in words is "twenty billion, seven hundred twenty-five million, nine hundred forty-two thousand, six hundred fifteen".