715525213 has 6 divisors (see below), whose sum is σ = 774799674. Its totient is φ = 660484656.

The previous prime is 715525177. The next prime is 715525219. The reversal of 715525213 is 312525517.

It can be written as a sum of positive squares in 3 ways, for example, as 41447844 + 674077369 = 6438^2 + 25963^2 .

It is a de Polignac number, because none of the positive numbers 2^k-715525213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (715525219) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2116770 + ... + 2117107.

It is an arithmetic number, because the mean of its divisors is an integer number (129133279).

Almost surely, 2^715525213 is an apocalyptic number.

It is an amenable number.

715525213 is a deficient number, since it is larger than the sum of its proper divisors (59274461).

715525213 is a wasteful number, since it uses less digits than its factorization.

715525213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4233903 (or 4233890 counting only the distinct ones).

The product of its digits is 10500, while the sum is 31.

The square root of 715525213 is about 26749.3030376494. The cubic root of 715525213 is about 894.4202993635.

The spelling of 715525213 in words is "seven hundred fifteen million, five hundred twenty-five thousand, two hundred thirteen".