725775 has 12 divisors (see below), whose sum is σ = 1200072. Its totient is φ = 387040.

The previous prime is 725749. The next prime is 725789. The reversal of 725775 is 577527.

725775 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 725775 - 2⁸ = 725519 is a prime.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4764 + ... + 4913.

It is an arithmetic number, because the mean of its divisors is an integer number (100006).

2⁷²⁵⁷⁷⁵ is an apocalyptic number.

725775 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

725775 is a deficient number, since it is larger than the sum of its proper divisors (474297).

725775 is a wasteful number, since it uses less digits than its factorization.

725775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9690 (or 9685 counting only the distinct ones).

The product of its digits is 17150, while the sum is 33.

The square root of 725775 is about 851.9242924110. The cubic root of 725775 is about 89.8670877621.

The spelling of 725775 in words is "seven hundred twenty-five thousand, seven hundred seventy-five".