7725231 has 12 divisors (see below), whose sum is σ = 11519040. Its totient is φ = 4983840.

The previous prime is 7725199. The next prime is 7725239. The reversal of 7725231 is 1325277.

It is not a de Polignac number, because 7725231 - 2⁵ = 7725199 is a prime.

It is a super-2 number, since 2×7725231² = 119358388006722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7725195 and 7725204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7725239) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13566 + ... + 14123.

It is an arithmetic number, because the mean of its divisors is an integer number (959920).

Almost surely, 2^7725231 is an apocalyptic number.

7725231 is a deficient number, since it is larger than the sum of its proper divisors (3793809).

7725231 is a wasteful number, since it uses less digits than its factorization.

7725231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27726 (or 27723 counting only the distinct ones).

The product of its digits is 2940, while the sum is 27.

The square root of 7725231 is about 2779.4299775314. The cubic root of 7725231 is about 197.6835317938.

The spelling of 7725231 in words is "seven million, seven hundred twenty-five thousand, two hundred thirty-one".