20959120215925 has 12 divisors (see below), whose sum is σ = 25998336357120. Its totient is φ = 16761472115120.

The previous prime is 20959120215881. The next prime is 20959120215991. The reversal of 20959120215925 is 52951202195902.

It is not a de Polignac number, because 20959120215925 - 2⁹ = 20959120215413 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 145528027 + ... + 145671976.

It is an arithmetic number, because the mean of its divisors is an integer number (2166528029760).

Almost surely, 2^{20959120215925} is an apocalyptic number.

20959120215925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20959120215925 is a deficient number, since it is larger than the sum of its proper divisors (5039216141195).

20959120215925 is a wasteful number, since it uses less digits than its factorization.

20959120215925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291202892 (or 291202887 counting only the distinct ones).

The product of its (nonzero) digits is 1458000, while the sum is 52.

The spelling of 20959120215925 in words is "twenty trillion, nine hundred fifty-nine billion, one hundred twenty million, two hundred fifteen thousand, nine hundred twenty-five".