725308780 has 144 divisors (see below), whose sum is σ = 1849278816. Its totient is φ = 238049280.

The previous prime is 725308751. The next prime is 725308823. The reversal of 725308780 is 87803527.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3009460 + ... + 3009700.

It is an arithmetic number, because the mean of its divisors is an integer number (12842214).

Almost surely, 2^725308780 is an apocalyptic number.

725308780 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 725308780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (924639408).

725308780 is an abundant number, since it is smaller than the sum of its proper divisors (1123970036).

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

725308780 is a wasteful number, since it uses less digits than its factorization.

725308780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384 (or 375 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 725308780 is about 26931.5573259327. The cubic root of 725308780 is about 898.4784083835.

The spelling of 725308780 in words is "seven hundred twenty-five million, three hundred eight thousand, seven hundred eighty".