71500225731 has 32 divisors (see below), whose sum is σ = 105641452800. Its totient is φ = 42652108800.

The previous prime is 71500225723. The next prime is 71500225733. The reversal of 71500225731 is 13752200517.

It is a happy number.

It is not a de Polignac number, because 71500225731 - 2³ = 71500225723 is a prime.

It is a super-2 number, since 2×71500225731² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 71500225692 and 71500225701.

It is not an unprimeable number, because it can be changed into a prime (71500225733) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1152595 + ... + 1213043.

It is an arithmetic number, because the mean of its divisors is an integer number (3301295400).

Almost surely, 2^71500225731 is an apocalyptic number.

71500225731 is a deficient number, since it is larger than the sum of its proper divisors (34141227069).

71500225731 is a wasteful number, since it uses less digits than its factorization.

71500225731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61027.

The product of its (nonzero) digits is 14700, while the sum is 33.

The spelling of 71500225731 in words is "seventy-one billion, five hundred million, two hundred twenty-five thousand, seven hundred thirty-one".