7825231 has 4 divisors (see below), whose sum is σ = 7898472. Its totient is φ = 7751992.

The previous prime is 7825217. The next prime is 7825247. The reversal of 7825231 is 1325287.

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

It is a cyclic number.

It is not a de Polignac number, because 7825231 - 2⁵ = 7825199 is a prime.

It is a super-2 number, since 2×7825231² = 122468480406722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7825231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7825261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36460 + ... + 36673.

It is an arithmetic number, because the mean of its divisors is an integer number (1974618).

Almost surely, 2^7825231 is an apocalyptic number.

7825231 is a deficient number, since it is larger than the sum of its proper divisors (73241).

7825231 is a wasteful number, since it uses less digits than its factorization.

7825231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73240.

The product of its digits is 3360, while the sum is 28.

The square root of 7825231 is about 2797.3614353530. The cubic root of 7825231 is about 198.5328554176.

The spelling of 7825231 in words is "seven million, eight hundred twenty-five thousand, two hundred thirty-one".