725338340 has 12 divisors (see below), whose sum is σ = 1523210556. Its totient is φ = 290135328.

The previous prime is 725338307. The next prime is 725338349. The reversal of 725338340 is 43833527.

It can be written as a sum of positive squares in 2 ways, for example, as 169416256 + 555922084 = 13016^2 + 23578^2 .

It is a super-2 number, since 2×725338340² = 1052231414947911200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 725338340.

It is not an unprimeable number, because it can be changed into a prime (725338349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18133439 + ... + 18133478.

It is an arithmetic number, because the mean of its divisors is an integer number (126934213).

Almost surely, 2^725338340 is an apocalyptic number.

It is an amenable number.

725338340 is an abundant number, since it is smaller than the sum of its proper divisors (797872216).

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

725338340 is a wasteful number, since it uses less digits than its factorization.

725338340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36266926 (or 36266924 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 35.

The square root of 725338340 is about 26932.1061189057. The cubic root of 725338340 is about 898.4906140637.

The spelling of 725338340 in words is "seven hundred twenty-five million, three hundred thirty-eight thousand, three hundred forty".