7927925257 has 24 divisors (see below), whose sum is σ = 9553291200. Its totient is φ = 6552102816.

The previous prime is 7927925219. The next prime is 7927925261. The reversal of 7927925257 is 7525297297.

It is a de Polignac number, because none of the positive numbers 2^k-7927925257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7927925198 and 7927925207.

It is not an unprimeable number, because it can be changed into a prime (7927925297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1166094 + ... + 1172872.

It is an arithmetic number, because the mean of its divisors is an integer number (398053800).

Almost surely, 2^7927925257 is an apocalyptic number.

It is an amenable number.

7927925257 is a deficient number, since it is larger than the sum of its proper divisors (1625365943).

7927925257 is a wasteful number, since it uses less digits than its factorization.

7927925257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7645 (or 7638 counting only the distinct ones).

The product of its digits is 5556600, while the sum is 55.

The square root of 7927925257 is about 89038.8974381422. The cubic root of 7927925257 is about 1993.9756431993.

The spelling of 7927925257 in words is "seven billion, nine hundred twenty-seven million, nine hundred twenty-five thousand, two hundred fifty-seven".