725161911 has 8 divisors (see below), whose sum is σ = 1023758064. Its totient is φ = 455003520.

The previous prime is 725161903. The next prime is 725161949. The reversal of 725161911 is 119161527.

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

It is not a de Polignac number, because 725161911 - 2³ = 725161903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725161981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7109380 + ... + 7109481.

It is an arithmetic number, because the mean of its divisors is an integer number (127969758).

Almost surely, 2^725161911 is an apocalyptic number.

725161911 is a deficient number, since it is larger than the sum of its proper divisors (298596153).

725161911 is a wasteful number, since it uses less digits than its factorization.

725161911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14218881.

The product of its digits is 3780, while the sum is 33.

The square root of 725161911 is about 26928.8304796179. The cubic root of 725161911 is about 898.4177594862.

The spelling of 725161911 in words is "seven hundred twenty-five million, one hundred sixty-one thousand, nine hundred eleven".