131251625 has 8 divisors (see below), whose sum is σ = 163802184. Its totient is φ = 105001200.

The previous prime is 131251559. The next prime is 131251633. The reversal of 131251625 is 526152131.

It can be written as a sum of positive squares in 4 ways, for example, as 561001 + 130690624 = 749^2 + 11432^2 .

It is not a de Polignac number, because 131251625 - 2¹⁰ = 131250601 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131251594 and 131251603.

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 7 ways as a sum of consecutive naturals, for example, 524882 + ... + 525131.

It is an arithmetic number, because the mean of its divisors is an integer number (20475273).

Almost surely, 2^131251625 is an apocalyptic number.

It is an amenable number.

131251625 is a deficient number, since it is larger than the sum of its proper divisors (32550559).

131251625 is an equidigital number, since it uses as much as digits as its factorization.

131251625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050028 (or 1050018 counting only the distinct ones).

The product of its digits is 1800, while the sum is 26.

The square root of 131251625 is about 11456.5101579844. The cubic root of 131251625 is about 508.2002757246.

The spelling of 131251625 in words is "one hundred thirty-one million, two hundred fifty-one thousand, six hundred twenty-five".