31255425 has 36 divisors (see below), whose sum is σ = 57059964. Its totient is φ = 16348800.

The previous prime is 31255397. The next prime is 31255439. The reversal of 31255425 is 52455213.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 685584 + 30569841 = 828^2 + 5529^2 .

It is not a de Polignac number, because 31255425 - 2¹¹ = 31253377 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 10615 + ... + 13235.

It is an arithmetic number, because the mean of its divisors is an integer number (1584999).

Almost surely, 2^31255425 is an apocalyptic number.

It is an amenable number.

31255425 is a deficient number, since it is larger than the sum of its proper divisors (25804539).

31255425 is a wasteful number, since it uses less digits than its factorization.

31255425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2690 (or 2682 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 31255425 is about 5590.6551494436. The cubic root of 31255425 is about 314.9984882769.

The spelling of 31255425 in words is "thirty-one million, two hundred fifty-five thousand, four hundred twenty-five".