131145325 has 6 divisors (see below), whose sum is σ = 162620234. Its totient is φ = 104916240.

The previous prime is 131145319. The next prime is 131145349. The reversal of 131145325 is 523541131.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 22714756 + 108430569 = 4766^2 + 10413^2 .

It is not a de Polignac number, because 131145325 - 2³ = 131145317 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 5245813 = 131145325 / (1 + 3 + 1 + 1 + 4 + 5 + 3 + 2 + 5).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131145325.

It is a congruent number.

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, 2622882 + ... + 2622931.

Almost surely, 2^131145325 is an apocalyptic number.

It is an amenable number.

131145325 is a deficient number, since it is larger than the sum of its proper divisors (31474909).

131145325 is an equidigital number, since it uses as much as digits as its factorization.

131145325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5245823 (or 5245818 counting only the distinct ones).

The product of its digits is 1800, while the sum is 25.

The square root of 131145325 is about 11451.8699346439. The cubic root of 131145325 is about 508.0630424273.

Adding to 131145325 its reverse (523541131), we get a palindrome (654686456).

The spelling of 131145325 in words is "one hundred thirty-one million, one hundred forty-five thousand, three hundred twenty-five".