725100 has 36 divisors (see below), whose sum is σ = 2098824. Its totient is φ = 193280.

The previous prime is 725099. The next prime is 725111. The reversal of 725100 is 1527.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 725100.

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, 909 + ... + 1508.

2⁷²⁵¹⁰⁰ is an apocalyptic number.

It is an amenable number.

725100 is an abundant number, since it is smaller than the sum of its proper divisors (1373724).

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

725100 is a wasteful number, since it uses less digits than its factorization.

725100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2434 (or 2427 counting only the distinct ones).

The product of its (nonzero) digits is 70, while the sum is 15.

The square root of 725100 is about 851.5280382935. The cubic root of 725100 is about 89.8392191162.

Adding to 725100 its reverse (1527), we get a palindrome (726627).

The spelling of 725100 in words is "seven hundred twenty-five thousand, one hundred".