131222025 has 120 divisors (see below), whose sum is σ = 273312864. Its totient is φ = 61689600.

The previous prime is 131222023. The next prime is 131222027. The reversal of 131222025 is 520222131.

It is an interprime number because it is at equal distance from previous prime (131222023) and next prime (131222027).

It is not a de Polignac number, because 131222025 - 2¹ = 131222023 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 131221989 and 131222007.

It is not an unprimeable number, because it can be changed into a prime (131222023) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 957757 + ... + 957893.

Almost surely, 2^131222025 is an apocalyptic number.

131222025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131222025 is an abundant number, since it is smaller than the sum of its proper divisors (142090839).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131222025 is a wasteful number, since it uses less digits than its factorization.

131222025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213 (or 199 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 131222025 is about 11455.2182432287. The cubic root of 131222025 is about 508.1620695713.

Adding to 131222025 its reverse (520222131), we get a palindrome (651444156).

The spelling of 131222025 in words is "one hundred thirty-one million, two hundred twenty-two thousand, twenty-five".