20125985733690 has 32 divisors (see below), whose sum is σ = 49607835108480. Its totient is φ = 5221877379264.

The previous prime is 20125985733677. The next prime is 20125985733709. The reversal of 20125985733690 is 9633758952102.

It is a super-2 number, since 2×20125985733690² (a number of 27 digits) contains 22 as substring.

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, 9065758230 + ... + 9065760449.

It is an arithmetic number, because the mean of its divisors is an integer number (1550244847140).

Almost surely, 2^{20125985733690} is an apocalyptic number.

20125985733690 is an abundant number, since it is smaller than the sum of its proper divisors (29481849374790).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20125985733690 is a wasteful number, since it uses less digits than its factorization.

20125985733690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18131518726.

The product of its (nonzero) digits is 24494400, while the sum is 60.

The spelling of 20125985733690 in words is "twenty trillion, one hundred twenty-five billion, nine hundred eighty-five million, seven hundred thirty-three thousand, six hundred ninety".