131138625 has 32 divisors (see below), whose sum is σ = 219772800. Its totient is φ = 69441600.

The previous prime is 131138611. The next prime is 131138653. The reversal of 131138625 is 526831131.

It is not a de Polignac number, because 131138625 - 2⁹ = 131138113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131138592 and 131138601.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54702 + ... + 57048.

It is an arithmetic number, because the mean of its divisors is an integer number (6867900).

Almost surely, 2^131138625 is an apocalyptic number.

131138625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131138625 is a deficient number, since it is larger than the sum of its proper divisors (88634175).

131138625 is a wasteful number, since it uses less digits than its factorization.

131138625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2514 (or 2504 counting only the distinct ones).

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

The square root of 131138625 is about 11451.5774022621. The cubic root of 131138625 is about 508.0543902435.

Adding to 131138625 its reverse (526831131), we get a palindrome (657969756).

The spelling of 131138625 in words is "one hundred thirty-one million, one hundred thirty-eight thousand, six hundred twenty-five".