725840907 has 16 divisors (see below), whose sum is σ = 1111336320. Its totient is φ = 416750400.

The previous prime is 725840887. The next prime is 725840939. The reversal of 725840907 is 709048527.

It is not a de Polignac number, because 725840907 - 2¹¹ = 725838859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (725840957) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 578194 + ... + 579447.

It is an arithmetic number, because the mean of its divisors is an integer number (69458520).

Almost surely, 2^725840907 is an apocalyptic number.

725840907 is a deficient number, since it is larger than the sum of its proper divisors (385495413).

725840907 is a wasteful number, since it uses less digits than its factorization.

725840907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157674.

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 725840907 is about 26941.4347613485. The cubic root of 725840907 is about 898.6980793060.

The spelling of 725840907 in words is "seven hundred twenty-five million, eight hundred forty thousand, nine hundred seven".