131500025 has 6 divisors (see below), whose sum is σ = 163060062. Its totient is φ = 105200000.

The previous prime is 131500009. The next prime is 131500051. The reversal of 131500025 is 520005131.

It can be written as a sum of positive squares in 3 ways, for example, as 76729 + 131423296 = 277^2 + 11464^2 .

It is not a de Polignac number, because 131500025 - 2⁴ = 131500009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 131499976 and 131500012.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2629976 + ... + 2630025.

It is an arithmetic number, because the mean of its divisors is an integer number (27176677).

Almost surely, 2^131500025 is an apocalyptic number.

It is an amenable number.

131500025 is a deficient number, since it is larger than the sum of its proper divisors (31560037).

131500025 is an equidigital number, since it uses as much as digits as its factorization.

131500025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5260011 (or 5260006 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 131500025 is about 11467.3460312315. The cubic root of 131500025 is about 508.5206714927.

Adding to 131500025 its reverse (520005131), we get a palindrome (651505156).

The spelling of 131500025 in words is "one hundred thirty-one million, five hundred thousand, twenty-five".