131825520 has 60 divisors (see below), whose sum is σ = 442716456. Its totient is φ = 35153280.

The previous prime is 131825513. The next prime is 131825539. The reversal of 131825520 is 25528131.

It is a happy number.

131825520 is a `hidden beast` number, since 1 + 31 + 82 + 552 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (60).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90826 + ... + 92265.

Almost surely, 2^131825520 is an apocalyptic number.

131825520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131825520 is an abundant number, since it is smaller than the sum of its proper divisors (310890936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131825520 is a wasteful number, since it uses less digits than its factorization.

131825520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183110 (or 183101 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 131825520 is about 11481.5295148338. The cubic root of 131825520 is about 508.9398971546.

The spelling of 131825520 in words is "one hundred thirty-one million, eight hundred twenty-five thousand, five hundred twenty".