725223456 has 120 divisors (see below), whose sum is σ = 2159199504. Its totient is φ = 238757760.

The previous prime is 725223437. The next prime is 725223463. The reversal of 725223456 is 654322527.

It is a super-2 number, since 2×725223456² = 1051898122265167872, which contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 725223456.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 213451 + ... + 216821.

Almost surely, 2^725223456 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 725223456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1079599752).

725223456 is an abundant number, since it is smaller than the sum of its proper divisors (1433976048).

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

725223456 is a wasteful number, since it uses less digits than its factorization.

725223456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3476 (or 3459 counting only the distinct ones).

The product of its digits is 100800, while the sum is 36.

The square root of 725223456 is about 26929.9731897379. The cubic root of 725223456 is about 898.4431752157.

The spelling of 725223456 in words is "seven hundred twenty-five million, two hundred twenty-three thousand, four hundred fifty-six".