131813625 has 16 divisors (see below), whose sum is σ = 219338496. Its totient is φ = 70300400.

The previous prime is 131813609. The next prime is 131813639. The reversal of 131813625 is 526318131.

It is not a de Polignac number, because 131813625 - 2⁴ = 131813609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131813592 and 131813601.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175377 + ... + 176126.

It is an arithmetic number, because the mean of its divisors is an integer number (13708656).

Almost surely, 2^131813625 is an apocalyptic number.

131813625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131813625 is a deficient number, since it is larger than the sum of its proper divisors (87524871).

131813625 is an equidigital number, since it uses as much as digits as its factorization.

131813625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351521 (or 351511 counting only the distinct ones).

The product of its digits is 4320, while the sum is 30.

The square root of 131813625 is about 11481.0114972506. The cubic root of 131813625 is about 508.9245889852.

The spelling of 131813625 in words is "one hundred thirty-one million, eight hundred thirteen thousand, six hundred twenty-five".