131225502 has 32 divisors (see below), whose sum is σ = 271514880. Its totient is φ = 42252480.

The previous prime is 131225491. The next prime is 131225519. The reversal of 131225502 is 205522131.

131225502 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22749 + ... + 27927.

It is an arithmetic number, because the mean of its divisors is an integer number (8484840).

Almost surely, 2^131225502 is an apocalyptic number.

131225502 is an abundant number, since it is smaller than the sum of its proper divisors (140289378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131225502 is a wasteful number, since it uses less digits than its factorization.

131225502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5328.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 131225502 is about 11455.3700071189. The cubic root of 131225502 is about 508.1665578013.

Adding to 131225502 its reverse (205522131), we get a palindrome (336747633).

The spelling of 131225502 in words is "one hundred thirty-one million, two hundred twenty-five thousand, five hundred two".