725773750129 has 4 divisors (see below), whose sum is σ = 768466323684. Its totient is φ = 683081176576.

The previous prime is 725773750099. The next prime is 725773750153. The reversal of 725773750129 is 921057377527.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 193136517729 + 532637232400 = 439473^2 + 729820^2 .

It is a cyclic number.

It is not a de Polignac number, because 725773750129 - 2¹¹ = 725773748081 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 725773750129.

It is not an unprimeable number, because it can be changed into a prime (725773750199) 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, 21346286752 + ... + 21346286785.

It is an arithmetic number, because the mean of its divisors is an integer number (192116580921).

Almost surely, 2^725773750129 is an apocalyptic number.

It is an amenable number.

725773750129 is a deficient number, since it is larger than the sum of its proper divisors (42692573555).

725773750129 is a wasteful number, since it uses less digits than its factorization.

725773750129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42692573554.

The product of its (nonzero) digits is 6482700, while the sum is 55.

The spelling of 725773750129 in words is "seven hundred twenty-five billion, seven hundred seventy-three million, seven hundred fifty thousand, one hundred twenty-nine".