725695901 has 4 divisors (see below), whose sum is σ = 829366752. Its totient is φ = 622025052.

The previous prime is 725695889. The next prime is 725695903. The reversal of 725695901 is 109596527.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 725695901 - 2¹⁰ = 725694877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725695903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51835415 + ... + 51835428.

It is an arithmetic number, because the mean of its divisors is an integer number (207341688).

Almost surely, 2^725695901 is an apocalyptic number.

It is an amenable number.

725695901 is a deficient number, since it is larger than the sum of its proper divisors (103670851).

725695901 is a wasteful number, since it uses less digits than its factorization.

725695901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103670850.

The product of its (nonzero) digits is 170100, while the sum is 44.

The square root of 725695901 is about 26938.7434933406. The cubic root of 725695901 is about 898.6382290498.

The spelling of 725695901 in words is "seven hundred twenty-five million, six hundred ninety-five thousand, nine hundred one".