131550725 has 12 divisors (see below), whose sum is σ = 167532804. Its totient is φ = 102395520.

The previous prime is 131550719. The next prime is 131550733. The reversal of 131550725 is 527055131.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 20079361 + 111471364 = 4481^2 + 10558^2 .

It is not a de Polignac number, because 131550725 - 2⁸ = 131550469 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 70184 + ... + 72033.

It is an arithmetic number, because the mean of its divisors is an integer number (13961067).

Almost surely, 2^131550725 is an apocalyptic number.

It is an amenable number.

131550725 is a deficient number, since it is larger than the sum of its proper divisors (35982079).

131550725 is a wasteful number, since it uses less digits than its factorization.

131550725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142264 (or 142259 counting only the distinct ones).

The product of its (nonzero) digits is 5250, while the sum is 29.

The square root of 131550725 is about 11469.5564430365. The cubic root of 131550725 is about 508.5860166902.

The spelling of 131550725 in words is "one hundred thirty-one million, five hundred fifty thousand, seven hundred twenty-five".