725344550 has 72 divisors (see below), whose sum is σ = 1575542016. Its totient is φ = 247719360.

The previous prime is 725344523. The next prime is 725344567. The reversal of 725344550 is 55443527.

It is a super-2 number, since 2×725344550² = 1052249432429405000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 725344550.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 937964 + ... + 938736.

It is an arithmetic number, because the mean of its divisors is an integer number (21882528).

Almost surely, 2^725344550 is an apocalyptic number.

725344550 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

725344550 is an abundant number, since it is smaller than the sum of its proper divisors (850197466).

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

725344550 is a wasteful number, since it uses less digits than its factorization.

725344550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1182 (or 1170 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 35.

The square root of 725344550 is about 26932.2214085656. The cubic root of 725344550 is about 898.4931782054.

The spelling of 725344550 in words is "seven hundred twenty-five million, three hundred forty-four thousand, five hundred fifty".