725771013 has 16 divisors (see below), whose sum is σ = 1056125952. Its totient is φ = 439670000.

The previous prime is 725771009. The next prime is 725771041. The reversal of 725771013 is 310177527.

It is not a de Polignac number, because 725771013 - 2² = 725771009 is a prime.

It is a super-2 number, since 2×725771013² = 1053487126622092338, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725771093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124228 + ... + 129938.

It is an arithmetic number, because the mean of its divisors is an integer number (66007872).

Almost surely, 2^725771013 is an apocalyptic number.

It is an amenable number.

725771013 is a deficient number, since it is larger than the sum of its proper divisors (330354939).

725771013 is a wasteful number, since it uses less digits than its factorization.

725771013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9576.

The product of its (nonzero) digits is 10290, while the sum is 33.

The square root of 725771013 is about 26940.1375831676. The cubic root of 725771013 is about 898.6692320204.

The spelling of 725771013 in words is "seven hundred twenty-five million, seven hundred seventy-one thousand, thirteen".