725308877 has 4 divisors (see below), whose sum is σ = 725906076. Its totient is φ = 724711680.

The previous prime is 725308873. The next prime is 725308897. The reversal of 725308877 is 778803527.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 778803527 = 557 ⋅1398211.

It can be written as a sum of positive squares in 2 ways, for example, as 83649316 + 641659561 = 9146^2 + 25331^2 .

It is a cyclic number.

It is not a de Polignac number, because 725308877 - 2² = 725308873 is a prime.

It is a super-2 number, since 2×725308877² = 1052145934110002258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725308873) 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, 296774 + ... + 299207.

It is an arithmetic number, because the mean of its divisors is an integer number (181476519).

Almost surely, 2^725308877 is an apocalyptic number.

It is an amenable number.

725308877 is a deficient number, since it is larger than the sum of its proper divisors (597199).

725308877 is a wasteful number, since it uses less digits than its factorization.

725308877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597198.

The product of its (nonzero) digits is 658560, while the sum is 47.

The square root of 725308877 is about 26931.5591267940. The cubic root of 725308877 is about 898.4784484366.

The spelling of 725308877 in words is "seven hundred twenty-five million, three hundred eight thousand, eight hundred seventy-seven".