71825075720 has 16 divisors (see below), whose sum is σ = 161606420460. Its totient is φ = 28730030272.

The previous prime is 71825075719. The next prime is 71825075723. The reversal of 71825075720 is 2757052817.

It can be written as a sum of positive squares in 2 ways, for example, as 65668162564 + 6156913156 = 256258^2 + 78466^2 .

It is not an unprimeable number, because it can be changed into a prime (71825075723) 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, 897813407 + ... + 897813486.

Almost surely, 2^71825075720 is an apocalyptic number.

It is an amenable number.

71825075720 is an abundant number, since it is smaller than the sum of its proper divisors (89781344740).

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

71825075720 is a wasteful number, since it uses less digits than its factorization.

71825075720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1795626904 (or 1795626900 counting only the distinct ones).

The product of its (nonzero) digits is 274400, while the sum is 44.

The spelling of 71825075720 in words is "seventy-one billion, eight hundred twenty-five million, seventy-five thousand, seven hundred twenty".