31492225 has 6 divisors (see below), whose sum is σ = 39050390. Its totient is φ = 25193760.

The previous prime is 31492213. The next prime is 31492243. The reversal of 31492225 is 52229413.

It can be written as a sum of positive squares in 3 ways, for example, as 767376 + 30724849 = 876^2 + 5543^2 .

It is not a de Polignac number, because 31492225 - 2¹⁵ = 31459457 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31492193 and 31492202.

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, 629820 + ... + 629869.

Almost surely, 2^31492225 is an apocalyptic number.

It is an amenable number.

31492225 is a deficient number, since it is larger than the sum of its proper divisors (7558165).

31492225 is a wasteful number, since it uses less digits than its factorization.

31492225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1259699 (or 1259694 counting only the distinct ones).

The product of its digits is 4320, while the sum is 28.

The square root of 31492225 is about 5611.7933853627. The cubic root of 31492225 is about 315.7919937786.

The spelling of 31492225 in words is "thirty-one million, four hundred ninety-two thousand, two hundred twenty-five".