725905106 has 4 divisors (see below), whose sum is σ = 1088857662. Its totient is φ = 362952552.

The previous prime is 725905099. The next prime is 725905133. The reversal of 725905106 is 601509527.

725905106 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 601509527 = 349 ⋅1723523.

It can be written as a sum of positive squares in only one way, i.e., 725494225 + 410881 = 26935^2 + 641^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 181476275 + ... + 181476278.

Almost surely, 2^725905106 is an apocalyptic number.

725905106 is a deficient number, since it is larger than the sum of its proper divisors (362952556).

725905106 is a wasteful number, since it uses less digits than its factorization.

725905106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362952555.

The product of its (nonzero) digits is 18900, while the sum is 35.

The square root of 725905106 is about 26942.6261897388. The cubic root of 725905106 is about 898.7245744679.

The spelling of 725905106 in words is "seven hundred twenty-five million, nine hundred five thousand, one hundred six".