131444225 has 24 divisors (see below), whose sum is σ = 178381440. Its totient is φ = 95288000.

The previous prime is 131444179. The next prime is 131444231. The reversal of 131444225 is 522444131.

It is not a de Polignac number, because 131444225 - 2⁸ = 131443969 is a prime.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 131444194 and 131444203.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 117971 + ... + 119079.

It is an arithmetic number, because the mean of its divisors is an integer number (7432560).

Almost surely, 2^131444225 is an apocalyptic number.

It is an amenable number.

131444225 is a deficient number, since it is larger than the sum of its proper divisors (46937215).

131444225 is a wasteful number, since it uses less digits than its factorization.

131444225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1561 (or 1556 counting only the distinct ones).

The product of its digits is 3840, while the sum is 26.

The square root of 131444225 is about 11464.9127776883. The cubic root of 131444225 is about 508.4487336915.

Adding to 131444225 its reverse (522444131), we get a palindrome (653888356).

The spelling of 131444225 in words is "one hundred thirty-one million, four hundred forty-four thousand, two hundred twenty-five".