20125532522731 has 4 divisors (see below), whose sum is σ = 20125690883200. Its totient is φ = 20125374162264.

The previous prime is 20125532522729. The next prime is 20125532522737. The reversal of 20125532522731 is 13722523552102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20125532522731 - 2¹ = 20125532522729 is a prime.

It is a super-2 number, since 2×20125532522731² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20125532522737) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78989451 + ... + 79243828.

It is an arithmetic number, because the mean of its divisors is an integer number (5031422720800).

Almost surely, 2^{20125532522731} is an apocalyptic number.

20125532522731 is a deficient number, since it is larger than the sum of its proper divisors (158360469).

20125532522731 is a wasteful number, since it uses less digits than its factorization.

20125532522731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158360468.

The product of its (nonzero) digits is 252000, while the sum is 40.

The spelling of 20125532522731 in words is "twenty trillion, one hundred twenty-five billion, five hundred thirty-two million, five hundred twenty-two thousand, seven hundred thirty-one".