72425726120665 has 8 divisors (see below), whose sum is σ = 86912380743048. Its totient is φ = 57939574631040.

The previous prime is 72425726120653. The next prime is 72425726120701. The reversal of 72425726120665 is 56602162752427.

It can be written as a sum of positive squares in 4 ways, for example, as 19316306281024 + 53109419839641 = 4395032^2 + 7287621^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72425726120665 - 2²⁵ = 72425692566233 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125466426 + ... + 126042355.

It is an arithmetic number, because the mean of its divisors is an integer number (10864047592881).

Almost surely, 2^{72425726120665} is an apocalyptic number.

It is an amenable number.

72425726120665 is a deficient number, since it is larger than the sum of its proper divisors (14486654622383).

72425726120665 is a wasteful number, since it uses less digits than its factorization.

72425726120665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251566379.

The product of its (nonzero) digits is 16934400, while the sum is 55.

The spelling of 72425726120665 in words is "seventy-two trillion, four hundred twenty-five billion, seven hundred twenty-six million, one hundred twenty thousand, six hundred sixty-five".