131235025 has 6 divisors (see below), whose sum is σ = 162731462. Its totient is φ = 104988000.

The previous prime is 131235023. The next prime is 131235029. The reversal of 131235025 is 520532131.

It can be written as a sum of positive squares in 3 ways, for example, as 452929 + 130782096 = 673^2 + 11436^2 .

It is not a de Polignac number, because 131235025 - 2¹ = 131235023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131234987 and 131235005.

It is not an unprimeable number, because it can be changed into a prime (131235023) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2624676 + ... + 2624725.

Almost surely, 2^131235025 is an apocalyptic number.

It is an amenable number.

131235025 is a deficient number, since it is larger than the sum of its proper divisors (31496437).

131235025 is an equidigital number, since it uses as much as digits as its factorization.

131235025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5249411 (or 5249406 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 131235025 is about 11455.7856561652. The cubic root of 131235025 is about 508.1788500083.

Adding to 131235025 its reverse (520532131), we get a palindrome (651767156).

The spelling of 131235025 in words is "one hundred thirty-one million, two hundred thirty-five thousand, twenty-five".