131333425 has 12 divisors (see below), whose sum is σ = 163495116. Its totient is φ = 104652800.

The previous prime is 131333413. The next prime is 131333437. The reversal of 131333425 is 524333131.

131333425 = 8103² + 8104².

It is an interprime number because it is at equal distance from previous prime (131333413) and next prime (131333437).

It can be written as a sum of positive squares in 6 ways, for example, as 17783089 + 113550336 = 4217^2 + 10656^2 .

It is not a de Polignac number, because 131333425 - 2¹¹ = 131331377 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

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 131333425.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3796 + ... + 16645.

It is an arithmetic number, because the mean of its divisors is an integer number (13624593).

Almost surely, 2^131333425 is an apocalyptic number.

131333425 is the 8104-th centered square number.

It is an amenable number.

131333425 is a deficient number, since it is larger than the sum of its proper divisors (32161691).

131333425 is a wasteful number, since it uses less digits than its factorization.

131333425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20708 (or 20703 counting only the distinct ones).

The product of its digits is 3240, while the sum is 25.

The square root of 131333425 is about 11460.0796245052. The cubic root of 131333425 is about 508.3058290831.

Adding to 131333425 its reverse (524333131), we get a palindrome (655666556).

The spelling of 131333425 in words is "one hundred thirty-one million, three hundred thirty-three thousand, four hundred twenty-five".