7931425 has 6 divisors (see below), whose sum is σ = 9834998. Its totient is φ = 6345120.

The previous prime is 7931423. The next prime is 7931437. The reversal of 7931425 is 5241397.

It can be written as a sum of positive squares in 3 ways, for example, as 136161 + 7795264 = 369^2 + 2792^2 .

It is not a de Polignac number, because 7931425 - 2¹ = 7931423 is a prime.

It is a d-powerful number, because it can be written as 7⁸ + 9² + 3⁶ + 1 + 4⁸ + 2²¹ + 5⁵ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7931423) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 158604 + ... + 158653.

Almost surely, 2^7931425 is an apocalyptic number.

It is an amenable number.

7931425 is a deficient number, since it is larger than the sum of its proper divisors (1903573).

7931425 is a wasteful number, since it uses less digits than its factorization.

7931425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317267 (or 317262 counting only the distinct ones).

The product of its digits is 7560, while the sum is 31.

The square root of 7931425 is about 2816.2785728688. The cubic root of 7931425 is about 199.4269010231.

The spelling of 7931425 in words is "seven million, nine hundred thirty-one thousand, four hundred twenty-five".