725763817 has 4 divisors (see below), whose sum is σ = 725826640. Its totient is φ = 725700996.

The previous prime is 725763811. The next prime is 725763823. The reversal of 725763817 is 718367527.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (725763811) and next prime (725763823).

It is a cyclic number.

It is not a de Polignac number, because 725763817 - 2³ = 725763809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (725763811) 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, 8523 + ... + 39040.

It is an arithmetic number, because the mean of its divisors is an integer number (181456660).

Almost surely, 2^725763817 is an apocalyptic number.

It is an amenable number.

725763817 is a deficient number, since it is larger than the sum of its proper divisors (62823).

725763817 is a wasteful number, since it uses less digits than its factorization.

725763817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62822.

The product of its digits is 493920, while the sum is 46.

The square root of 725763817 is about 26940.0040274681. The cubic root of 725763817 is about 898.6662619168. Note that the first 3 decimals are identical.

The spelling of 725763817 in words is "seven hundred twenty-five million, seven hundred sixty-three thousand, eight hundred seventeen".