725922732405 has 16 divisors (see below), whose sum is σ = 1250820708480. Its totient is φ = 357377345088.

The previous prime is 725922732289. The next prime is 725922732461. The reversal of 725922732405 is 504237229527.

725922732405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 725922732405 - 2⁸ = 725922732149 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1861340145 + ... + 1861340534.

It is an arithmetic number, because the mean of its divisors is an integer number (78176294280).

Almost surely, 2^725922732405 is an apocalyptic number.

It is an amenable number.

725922732405 is a deficient number, since it is larger than the sum of its proper divisors (524897976075).

725922732405 is a wasteful number, since it uses less digits than its factorization.

725922732405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3722680700.

The product of its (nonzero) digits is 2116800, while the sum is 48.

The spelling of 725922732405 in words is "seven hundred twenty-five billion, nine hundred twenty-two million, seven hundred thirty-two thousand, four hundred five".