725705635 has 8 divisors (see below), whose sum is σ = 871889760. Its totient is φ = 579869184.

The previous prime is 725705633. The next prime is 725705641. The reversal of 725705635 is 536507527.

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 725705635 - 2¹ = 725705633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (725705633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82302 + ... + 90691.

It is an arithmetic number, because the mean of its divisors is an integer number (108986220).

Almost surely, 2^725705635 is an apocalyptic number.

725705635 is a deficient number, since it is larger than the sum of its proper divisors (146184125).

725705635 is a wasteful number, since it uses less digits than its factorization.

725705635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173837.

The product of its (nonzero) digits is 220500, while the sum is 40.

The square root of 725705635 is about 26938.9241618889. The cubic root of 725705635 is about 898.6422469428.

The spelling of 725705635 in words is "seven hundred twenty-five million, seven hundred five thousand, six hundred thirty-five".