725783220 has 48 divisors (see below), whose sum is σ = 2257993920. Its totient is φ = 193542048.

The previous prime is 725783213. The next prime is 725783243. The reversal of 725783220 is 22387527.

725783220 = T₁₃ + T₁₄ + ... + T₁₆₃₂.

It is a happy number.

It is a super-2 number, since 2×725783220² = 1053522564867136800, 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 (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 671482 + ... + 672561.

It is an arithmetic number, because the mean of its divisors is an integer number (47041540).

Almost surely, 2^725783220 is an apocalyptic number.

It is an amenable number.

725783220 is an abundant number, since it is smaller than the sum of its proper divisors (1532210700).

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

725783220 is a wasteful number, since it uses less digits than its factorization.

725783220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1344061 (or 1344053 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 725783220 is about 26940.3641400780. The cubic root of 725783220 is about 898.6742703376.

The spelling of 725783220 in words is "seven hundred twenty-five million, seven hundred eighty-three thousand, two hundred twenty".