725890 has 16 divisors (see below), whose sum is σ = 1425600. Its totient is φ = 263920.

The previous prime is 725867. The next prime is 725891. The reversal of 725890 is 98527.

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

It is not an unprimeable number, because it can be changed into a prime (725891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3190 + ... + 3409.

It is an arithmetic number, because the mean of its divisors is an integer number (89100).

2⁷²⁵⁸⁹⁰ is an apocalyptic number.

725890 is a deficient number, since it is larger than the sum of its proper divisors (699710).

725890 is a wasteful number, since it uses less digits than its factorization.

725890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6617.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 725890 is about 851.9917839979. The cubic root of 725890 is about 89.8718340307.

The spelling of 725890 in words is "seven hundred twenty-five thousand, eight hundred ninety".