725709425 has 24 divisors (see below), whose sum is σ = 1042540416. Its totient is φ = 490803840.

The previous prime is 725709407. The next prime is 725709431. The reversal of 725709425 is 524907527.

It is not a de Polignac number, because 725709425 - 2¹² = 725705329 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15629 + ... + 41178.

It is an arithmetic number, because the mean of its divisors is an integer number (43439184).

Almost surely, 2^725709425 is an apocalyptic number.

It is an amenable number.

725709425 is a deficient number, since it is larger than the sum of its proper divisors (316830991).

725709425 is a wasteful number, since it uses less digits than its factorization.

725709425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56897 (or 56892 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 41.

The square root of 725709425 is about 26938.9945061058. The cubic root of 725709425 is about 898.6438113274.

The spelling of 725709425 in words is "seven hundred twenty-five million, seven hundred nine thousand, four hundred twenty-five".