725811166 has 8 divisors (see below), whose sum is σ = 1118141640. Its totient is φ = 353097288.

The previous prime is 725811131. The next prime is 725811181. The reversal of 725811166 is 661118527.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4904056 + ... + 4904203.

It is an arithmetic number, because the mean of its divisors is an integer number (139767705).

Almost surely, 2^725811166 is an apocalyptic number.

725811166 is a deficient number, since it is larger than the sum of its proper divisors (392330474).

725811166 is a wasteful number, since it uses less digits than its factorization.

725811166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9808298.

The product of its digits is 20160, while the sum is 37.

The square root of 725811166 is about 26940.8827991957. The cubic root of 725811166 is about 898.6858045571.

The spelling of 725811166 in words is "seven hundred twenty-five million, eight hundred eleven thousand, one hundred sixty-six".