725535825 has 24 divisors (see below), whose sum is σ = 1370918208. Its totient is φ = 331673280.

The previous prime is 725535821. The next prime is 725535827. The reversal of 725535825 is 528535527.

It is a happy number.

It is not a de Polignac number, because 725535825 - 2² = 725535821 is a prime.

It is not an unprimeable number, because it can be changed into a prime (725535821) 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, 690462 + ... + 691511.

It is an arithmetic number, because the mean of its divisors is an integer number (57121592).

Almost surely, 2^725535825 is an apocalyptic number.

725535825 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

725535825 is a deficient number, since it is larger than the sum of its proper divisors (645382383).

725535825 is a wasteful number, since it uses less digits than its factorization.

725535825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1381993 (or 1381988 counting only the distinct ones).

The product of its digits is 420000, while the sum is 42.

The square root of 725535825 is about 26935.7722183716. The cubic root of 725535825 is about 898.5721494926.

The spelling of 725535825 in words is "seven hundred twenty-five million, five hundred thirty-five thousand, eight hundred twenty-five".