725531225 has 6 divisors (see below), whose sum is σ = 899658750. Its totient is φ = 580424960.

The previous prime is 725531221. The next prime is 725531237. The reversal of 725531225 is 522135527.

It can be written as a sum of positive squares in 3 ways, for example, as 65092624 + 660438601 = 8068^2 + 25699^2 .

It is not a de Polignac number, because 725531225 - 2² = 725531221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 725531191 and 725531200.

It is not an unprimeable number, because it can be changed into a prime (725531221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14510600 + ... + 14510649.

It is an arithmetic number, because the mean of its divisors is an integer number (149943125).

Almost surely, 2^725531225 is an apocalyptic number.

It is an amenable number.

725531225 is a deficient number, since it is larger than the sum of its proper divisors (174127525).

725531225 is a wasteful number, since it uses less digits than its factorization.

725531225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29021259 (or 29021254 counting only the distinct ones).

The product of its digits is 21000, while the sum is 32.

The square root of 725531225 is about 26935.6868299288. The cubic root of 725531225 is about 898.5702504636.

The spelling of 725531225 in words is "seven hundred twenty-five million, five hundred thirty-one thousand, two hundred twenty-five".