725167822 has 4 divisors (see below), whose sum is σ = 1087751736. Its totient is φ = 362583910.

The previous prime is 725167811. The next prime is 725167831. The reversal of 725167822 is 228761527.

It is a happy number.

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

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 181291954 + ... + 181291957.

It is an arithmetic number, because the mean of its divisors is an integer number (271937934).

Almost surely, 2^725167822 is an apocalyptic number.

725167822 is a deficient number, since it is larger than the sum of its proper divisors (362583914).

725167822 is a wasteful number, since it uses less digits than its factorization.

725167822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362583913.

The product of its digits is 94080, while the sum is 40.

The square root of 725167822 is about 26928.9402316541. The cubic root of 725167822 is about 898.4202005654.

The spelling of 725167822 in words is "seven hundred twenty-five million, one hundred sixty-seven thousand, eight hundred twenty-two".