725725465 has 8 divisors (see below), whose sum is σ = 871342920. Its totient is φ = 580265472.

The previous prime is 725725453. The next prime is 725725471. The reversal of 725725465 is 564527527.

It can be written as a sum of positive squares in 4 ways, for example, as 60652944 + 665072521 = 7788^2 + 25789^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 725725465 - 2⁵ = 725725433 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28974 + ... + 47863.

It is an arithmetic number, because the mean of its divisors is an integer number (108917865).

Almost surely, 2^725725465 is an apocalyptic number.

It is an amenable number.

725725465 is a deficient number, since it is larger than the sum of its proper divisors (145617455).

725725465 is a wasteful number, since it uses less digits than its factorization.

725725465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78731.

The product of its digits is 588000, while the sum is 43.

The square root of 725725465 is about 26939.2922141618. The cubic root of 725725465 is about 898.6504320400.

The spelling of 725725465 in words is "seven hundred twenty-five million, seven hundred twenty-five thousand, four hundred sixty-five".