725670 has 48 divisors (see below), whose sum is σ = 2061072. Its totient is φ = 175680.

The previous prime is 725663. The next prime is 725671. The reversal of 725670 is 76527.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725671) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 624 + ... + 1356.

It is an arithmetic number, because the mean of its divisors is an integer number (42939).

2⁷²⁵⁶⁷⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 725670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1030536).

725670 is an abundant number, since it is smaller than the sum of its proper divisors (1335402).

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

725670 is a wasteful number, since it uses less digits than its factorization.

725670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757 (or 754 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 725670 is about 851.8626649877. The cubic root of 725670 is about 89.8627537746.

The spelling of 725670 in words is "seven hundred twenty-five thousand, six hundred seventy".