7725631 has 4 divisors (see below), whose sum is σ = 8061552. Its totient is φ = 7389712.

The previous prime is 7725611. The next prime is 7725649. The reversal of 7725631 is 1365277.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1365277 = 359 ⋅3803.

It is a cyclic number.

It is not a de Polignac number, because 7725631 - 2⁷ = 7725503 is a prime.

It is a super-2 number, since 2×7725631² = 119370748696322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7725593 and 7725602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7725611) 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, 167926 + ... + 167971.

It is an arithmetic number, because the mean of its divisors is an integer number (2015388).

Almost surely, 2^7725631 is an apocalyptic number.

7725631 is a deficient number, since it is larger than the sum of its proper divisors (335921).

7725631 is a wasteful number, since it uses less digits than its factorization.

7725631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335920.

The product of its digits is 8820, while the sum is 31.

The square root of 7725631 is about 2779.5019338004. The cubic root of 7725631 is about 197.6869436464.

The spelling of 7725631 in words is "seven million, seven hundred twenty-five thousand, six hundred thirty-one".