31225485 has 16 divisors (see below), whose sum is σ = 50219136. Its totient is φ = 16567488.

The previous prime is 31225471. The next prime is 31225487. The reversal of 31225485 is 58452213.

It is not a de Polignac number, because 31225485 - 2⁷ = 31225357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31225487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2329 + ... + 8238.

It is an arithmetic number, because the mean of its divisors is an integer number (3138696).

Almost surely, 2^31225485 is an apocalyptic number.

It is an amenable number.

31225485 is a deficient number, since it is larger than the sum of its proper divisors (18993651).

31225485 is a wasteful number, since it uses less digits than its factorization.

31225485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10772.

The product of its digits is 9600, while the sum is 30.

The square root of 31225485 is about 5587.9768252920. The cubic root of 31225485 is about 314.8978756876.

Adding to 31225485 its reverse (58452213), we get a palindrome (89677698).

The spelling of 31225485 in words is "thirty-one million, two hundred twenty-five thousand, four hundred eighty-five".