725160613 has 4 divisors (see below), whose sum is σ = 725220748. Its totient is φ = 725100480.

The previous prime is 725160607. The next prime is 725160617. The reversal of 725160613 is 316061527.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 133795489 + 591365124 = 11567^2 + 24318^2 .

It is a cyclic number.

It is not a de Polignac number, because 725160613 - 2²¹ = 723063461 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 (725160617) 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, 5028 + ... + 38413.

It is an arithmetic number, because the mean of its divisors is an integer number (181305187).

Almost surely, 2^725160613 is an apocalyptic number.

It is an amenable number.

725160613 is a deficient number, since it is larger than the sum of its proper divisors (60135).

725160613 is a wasteful number, since it uses less digits than its factorization.

725160613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60134.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 725160613 is about 26928.8063790432. The cubic root of 725160613 is about 898.4172234464.

The spelling of 725160613 in words is "seven hundred twenty-five million, one hundred sixty thousand, six hundred thirteen".