20125547533031 has 4 divisors (see below), whose sum is σ = 20125559946912. Its totient is φ = 20125535119152.

The previous prime is 20125547532991. The next prime is 20125547533043. The reversal of 20125547533031 is 13033574552102.

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 20125547533031 - 2³⁰ = 20124473791207 is a prime.

It is a super-2 number, since 2×20125547533031² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20125547533031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20125547533081) 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, 3330911 + ... + 7165616.

It is an arithmetic number, because the mean of its divisors is an integer number (5031389986728).

Almost surely, 2^{20125547533031} is an apocalyptic number.

20125547533031 is a deficient number, since it is larger than the sum of its proper divisors (12413881).

20125547533031 is a wasteful number, since it uses less digits than its factorization.

20125547533031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12413880.

The product of its (nonzero) digits is 378000, while the sum is 41.

The spelling of 20125547533031 in words is "twenty trillion, one hundred twenty-five billion, five hundred forty-seven million, five hundred thirty-three thousand, thirty-one".