725323392 has 96 divisors (see below), whose sum is σ = 2095650180. Its totient is φ = 240795648.

The previous prime is 725323381. The next prime is 725323393. The reversal of 725323392 is 293323527.

725323392 is a `hidden beast` number, since 7 + 2 + 532 + 33 + 92 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 723825216 + 1498176 = 26904^2 + 1224^2 .

It is a tau number, because it is divible by the number of its divisors (96).

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

It is not an unprimeable number, because it can be changed into a prime (725323393) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 317968 + ... + 320240.

Almost surely, 2^725323392 is an apocalyptic number.

725323392 is a gapful number since it is divisible by the number (72) 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 725323392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1047825090).

725323392 is an abundant number, since it is smaller than the sum of its proper divisors (1370326788).

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

725323392 is a wasteful number, since it uses less digits than its factorization.

725323392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2570 (or 2555 counting only the distinct ones).

The product of its digits is 68040, while the sum is 36.

The square root of 725323392 is about 26931.8286048311. The cubic root of 725323392 is about 898.4844418959.

The spelling of 725323392 in words is "seven hundred twenty-five million, three hundred twenty-three thousand, three hundred ninety-two".