31766225 has 6 divisors (see below), whose sum is σ = 39390150. Its totient is φ = 25412960.

The previous prime is 31766213. The next prime is 31766237. The reversal of 31766225 is 52266713.

It is an interprime number because it is at equal distance from previous prime (31766213) and next prime (31766237).

It can be written as a sum of positive squares in 3 ways, for example, as 506944 + 31259281 = 712^2 + 5591^2 .

It is not a de Polignac number, because 31766225 - 2⁴ = 31766209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31766191 and 31766200.

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, 635300 + ... + 635349.

It is an arithmetic number, because the mean of its divisors is an integer number (6565025).

Almost surely, 2^31766225 is an apocalyptic number.

It is an amenable number.

31766225 is a deficient number, since it is larger than the sum of its proper divisors (7623925).

31766225 is a wasteful number, since it uses less digits than its factorization.

31766225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1270659 (or 1270654 counting only the distinct ones).

The product of its digits is 15120, while the sum is 32.

The square root of 31766225 is about 5636.1533868411. The cubic root of 31766225 is about 316.7052061435.

The spelling of 31766225 in words is "thirty-one million, seven hundred sixty-six thousand, two hundred twenty-five".