725303808 has 100 divisors (see below), whose sum is σ = 2164964670. Its totient is φ = 241754112.

The previous prime is 725303797. The next prime is 725303851. The reversal of 725303808 is 808303527.

It can be written as a sum of positive squares in only one way, i.e., 725117184 + 186624 = 26928^2 + 432^2 .

It is a super-2 number, since 2×725303808² = 1052131227798601728, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 32728 + ... + 50216.

Almost surely, 2^725303808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 725303808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1082482335).

725303808 is an abundant number, since it is smaller than the sum of its proper divisors (1439660862).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

725303808 is an equidigital number, since it uses as much as digits as its factorization.

725303808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17519 (or 17494 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 725303808 is about 26931.4650177074. The cubic root of 725303808 is about 898.4763553523.

The spelling of 725303808 in words is "seven hundred twenty-five million, three hundred three thousand, eight hundred eight".