31294925 has 6 divisors (see below), whose sum is σ = 38805738. Its totient is φ = 25035920.

The previous prime is 31294897. The next prime is 31294937. The reversal of 31294925 is 52949213.

It can be written as a sum of positive squares in 3 ways, for example, as 6980164 + 24314761 = 2642^2 + 4931^2 .

It is not a de Polignac number, because 31294925 - 2¹⁰ = 31293901 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent 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, 625874 + ... + 625923.

It is an arithmetic number, because the mean of its divisors is an integer number (6467623).

Almost surely, 2^31294925 is an apocalyptic number.

It is an amenable number.

31294925 is a deficient number, since it is larger than the sum of its proper divisors (7510813).

31294925 is a wasteful number, since it uses less digits than its factorization.

31294925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251807 (or 1251802 counting only the distinct ones).

The product of its digits is 19440, while the sum is 35.

The square root of 31294925 is about 5594.1867147960. The cubic root of 31294925 is about 315.1311287435.

The spelling of 31294925 in words is "thirty-one million, two hundred ninety-four thousand, nine hundred twenty-five".