725844220 has 24 divisors (see below), whose sum is σ = 1531505808. Its totient is φ = 288960000.

The previous prime is 725844211. The next prime is 725844227. The reversal of 725844220 is 22448527.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725844227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81781 + ... + 90220.

It is an arithmetic number, because the mean of its divisors is an integer number (63812742).

Almost surely, 2^725844220 is an apocalyptic number.

It is an amenable number.

725844220 is an abundant number, since it is smaller than the sum of its proper divisors (805661588).

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

725844220 is a wasteful number, since it uses less digits than its factorization.

725844220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172221 (or 172219 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 34.

The square root of 725844220 is about 26941.4962464968. The cubic root of 725844220 is about 898.6994466314.

The spelling of 725844220 in words is "seven hundred twenty-five million, eight hundred forty-four thousand, two hundred twenty".