725566971213 has 24 divisors (see below), whose sum is σ = 1260801422400. Its totient is φ = 392788134144.

The previous prime is 725566971197. The next prime is 725566971221. The reversal of 725566971213 is 312179665527.

It is a happy number.

725566971213 is a `hidden beast` number, since 7 + 2 + 5 + 566 + 9 + 71 + 2 + 1 + 3 = 666.

It is not a de Polignac number, because 725566971213 - 2⁴ = 725566971197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 725566971213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725566971263) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 303076068 + ... + 303078461.

It is an arithmetic number, because the mean of its divisors is an integer number (52533392600).

Almost surely, 2^725566971213 is an apocalyptic number.

It is an amenable number.

725566971213 is a deficient number, since it is larger than the sum of its proper divisors (535234451187).

725566971213 is a wasteful number, since it uses less digits than its factorization.

725566971213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606154561 (or 606154558 counting only the distinct ones).

The product of its digits is 4762800, while the sum is 54.

The spelling of 725566971213 in words is "seven hundred twenty-five billion, five hundred sixty-six million, nine hundred seventy-one thousand, two hundred thirteen".