7925640231 has 8 divisors (see below), whose sum is σ = 10931917680. Its totient is φ = 5101561472.

The previous prime is 7925640211. The next prime is 7925640253. The reversal of 7925640231 is 1320465297.

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

It is a cyclic number.

It is not a de Polignac number, because 7925640231 - 2³⁰ = 6851898407 is a prime.

It is a super-2 number, since 2×7925640231² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7925640231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7925640211) 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, 45549570 + ... + 45549743.

It is an arithmetic number, because the mean of its divisors is an integer number (1366489710).

Almost surely, 2^7925640231 is an apocalyptic number.

7925640231 is a deficient number, since it is larger than the sum of its proper divisors (3006277449).

7925640231 is a wasteful number, since it uses less digits than its factorization.

7925640231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91099345.

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 7925640231 is about 89026.0648967481. The cubic root of 7925640231 is about 1993.7840536028.

The spelling of 7925640231 in words is "seven billion, nine hundred twenty-five million, six hundred forty thousand, two hundred thirty-one".