131501225 has 24 divisors (see below), whose sum is σ = 174155520. Its totient is φ = 98280000.

The previous prime is 131501221. The next prime is 131501297. The reversal of 131501225 is 522105131.

It is a happy number.

It is not a de Polignac number, because 131501225 - 2² = 131501221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131501197 and 131501206.

It is not an unprimeable number, because it can be changed into a prime (131501221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19550 + ... + 25400.

It is an arithmetic number, because the mean of its divisors is an integer number (7256480).

Almost surely, 2^131501225 is an apocalyptic number.

It is an amenable number.

131501225 is a deficient number, since it is larger than the sum of its proper divisors (42654295).

131501225 is a wasteful number, since it uses less digits than its factorization.

131501225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5921 (or 5916 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 131501225 is about 11467.3983535935. The cubic root of 131501225 is about 508.5222183186.

Adding to 131501225 its reverse (522105131), we get a palindrome (653606356).

The spelling of 131501225 in words is "one hundred thirty-one million, five hundred one thousand, two hundred twenty-five".