7899425 has 6 divisors (see below), whose sum is σ = 9795318. Its totient is φ = 6319520.

The previous prime is 7899413. The next prime is 7899443. The reversal of 7899425 is 5249987.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 53824 + 7845601 = 232^2 + 2801^2 .

It is not a de Polignac number, because 7899425 - 2⁶ = 7899361 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 157964 + ... + 158013.

It is an arithmetic number, because the mean of its divisors is an integer number (1632553).

Almost surely, 2^7899425 is an apocalyptic number.

It is an amenable number.

7899425 is a deficient number, since it is larger than the sum of its proper divisors (1895893).

7899425 is a wasteful number, since it uses less digits than its factorization.

7899425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315987 (or 315982 counting only the distinct ones).

The product of its digits is 181440, while the sum is 44.

The square root of 7899425 is about 2810.5915747401. The cubic root of 7899425 is about 199.1583379939.

The spelling of 7899425 in words is "seven million, eight hundred ninety-nine thousand, four hundred twenty-five".