131525145 has 24 divisors (see below), whose sum is σ = 228661056. Its totient is φ = 69936288.

The previous prime is 131525143. The next prime is 131525159. The reversal of 131525145 is 541525131.

131525145 is a `hidden beast` number, since 131 + 525 + 1 + 4 + 5 = 666.

It is not a de Polignac number, because 131525145 - 2¹ = 131525143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131525143) 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, 11404 + ... + 19826.

It is an arithmetic number, because the mean of its divisors is an integer number (9527544).

Almost surely, 2^131525145 is an apocalyptic number.

131525145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131525145 is a deficient number, since it is larger than the sum of its proper divisors (97135911).

131525145 is a wasteful number, since it uses less digits than its factorization.

131525145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8781 (or 8778 counting only the distinct ones).

The product of its digits is 3000, while the sum is 27.

The square root of 131525145 is about 11468.4412628744. The cubic root of 131525145 is about 508.5530497526.

The spelling of 131525145 in words is "one hundred thirty-one million, five hundred twenty-five thousand, one hundred forty-five".