100720031725025 has 6 divisors (see below), whose sum is σ = 124892839339062. Its totient is φ = 80576025380000.

The previous prime is 100720031725003. The next prime is 100720031725031. The reversal of 100720031725025 is 520527130027001.

It can be written as a sum of positive squares in 3 ways, for example, as 23045721955216 + 77674309769809 = 4800596^2 + 8813303^2 .

It is not a de Polignac number, because 100720031725025 - 2³⁴ = 100702851855841 is a prime.

It is a super-2 number, since 2×100720031725025² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2014400634476 + ... + 2014400634525.

It is an arithmetic number, because the mean of its divisors is an integer number (20815473223177).

Almost surely, 2^{100720031725025} is an apocalyptic number.

It is an amenable number.

100720031725025 is a deficient number, since it is larger than the sum of its proper divisors (24172807614037).

100720031725025 is an equidigital number, since it uses as much as digits as its factorization.

100720031725025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4028801269011 (or 4028801269006 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 35.

The spelling of 100720031725025 in words is "one hundred trillion, seven hundred twenty billion, thirty-one million, seven hundred twenty-five thousand, twenty-five".