725715714761 has 8 divisors (see below), whose sum is σ = 728121746184. Its totient is φ = 723313048320.

The previous prime is 725715714739. The next prime is 725715714793. The reversal of 725715714761 is 167417517527.

It can be written as a sum of positive squares in 4 ways, for example, as 8103420361 + 717612294400 = 90019^2 + 847120^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 725715714761 - 2⁶ = 725715714697 is a prime.

It is a super-2 number, since 2×725715714761² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (725715714721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 408830 + ... + 1272231.

It is an arithmetic number, because the mean of its divisors is an integer number (91015218273).

Almost surely, 2^725715714761 is an apocalyptic number.

It is an amenable number.

725715714761 is a deficient number, since it is larger than the sum of its proper divisors (2406031423).

725715714761 is a wasteful number, since it uses less digits than its factorization.

725715714761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1682491.

The product of its digits is 2881200, while the sum is 53.

The spelling of 725715714761 in words is "seven hundred twenty-five billion, seven hundred fifteen million, seven hundred fourteen thousand, seven hundred sixty-one".