725831271 has 24 divisors (see below), whose sum is σ = 1170339456. Its totient is φ = 429665040.

The previous prime is 725831261. The next prime is 725831287. The reversal of 725831271 is 172138527.

725831271 is a `hidden beast` number, since 7 + 2 + 583 + 1 + 2 + 71 = 666.

It is not a de Polignac number, because 725831271 - 2¹⁹ = 725306983 is a prime.

It is a super-2 number, since 2×725831271² = 1053662067922950882, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725831231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80995 + ... + 89508.

It is an arithmetic number, because the mean of its divisors is an integer number (48764144).

Almost surely, 2^725831271 is an apocalyptic number.

725831271 is a deficient number, since it is larger than the sum of its proper divisors (444508185).

725831271 is a wasteful number, since it uses less digits than its factorization.

725831271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170563 (or 170560 counting only the distinct ones).

The product of its digits is 23520, while the sum is 36.

The square root of 725831271 is about 26941.2559284084. The cubic root of 725831271 is about 898.6941023587.

Adding to 725831271 its reverse (172138527), we get a palindrome (897969798).

The spelling of 725831271 in words is "seven hundred twenty-five million, eight hundred thirty-one thousand, two hundred seventy-one".