131725449 has 12 divisors (see below), whose sum is σ = 190440900. Its totient is φ = 87738144.

The previous prime is 131725441. The next prime is 131725457. The reversal of 131725449 is 944527131.

It is an interprime number because it is at equal distance from previous prime (131725441) and next prime (131725457).

It can be written as a sum of positive squares in 2 ways, for example, as 97713225 + 34012224 = 9885^2 + 5832^2 .

It is not a de Polignac number, because 131725449 - 2³ = 131725441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131725441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5107 + ... + 17015.

It is an arithmetic number, because the mean of its divisors is an integer number (15870075).

Almost surely, 2^131725449 is an apocalyptic number.

It is an amenable number.

131725449 is a deficient number, since it is larger than the sum of its proper divisors (58715451).

131725449 is a wasteful number, since it uses less digits than its factorization.

131725449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13144 (or 13141 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 131725449 is about 11477.1707750647. The cubic root of 131725449 is about 508.8110829028.

The spelling of 131725449 in words is "one hundred thirty-one million, seven hundred twenty-five thousand, four hundred forty-nine".