131442525 has 36 divisors (see below), whose sum is σ = 236059668. Its totient is φ = 69914880.

The previous prime is 131442517. The next prime is 131442583. The reversal of 131442525 is 525244131.

131442525 is a `hidden beast` number, since 131 + 4 + 4 + 2 + 525 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 35676729 + 95765796 = 5973^2 + 9786^2 .

It is not a de Polignac number, because 131442525 - 2³ = 131442517 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 137449 + ... + 138401.

It is an arithmetic number, because the mean of its divisors is an integer number (6557213).

Almost surely, 2^131442525 is an apocalyptic number.

131442525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131442525 is a deficient number, since it is larger than the sum of its proper divisors (104617143).

131442525 is a wasteful number, since it uses less digits than its factorization.

131442525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1582 (or 1574 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 131442525 is about 11464.8386382016. The cubic root of 131442525 is about 508.4465417185.

Adding to 131442525 its reverse (525244131), we get a palindrome (656686656).

The spelling of 131442525 in words is "one hundred thirty-one million, four hundred forty-two thousand, five hundred twenty-five".