130206025 has 12 divisors (see below), whose sum is σ = 164104204. Its totient is φ = 102456000.

The previous prime is 130206019. The next prime is 130206029. The reversal of 130206025 is 520602031.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 53187849 + 77018176 = 7293^2 + 8776^2 .

It is not a de Polignac number, because 130206025 - 2³ = 130206017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130205993 and 130206011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130206029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41166 + ... + 44215.

Almost surely, 2^130206025 is an apocalyptic number.

It is an amenable number.

130206025 is a deficient number, since it is larger than the sum of its proper divisors (33898179).

130206025 is an equidigital number, since it uses as much as digits as its factorization.

130206025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85452 (or 85447 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 130206025 is about 11410.7854681437. The cubic root of 130206025 is about 506.8471711335.

Adding to 130206025 its reverse (520602031), we get a palindrome (650808056).

The spelling of 130206025 in words is "one hundred thirty million, two hundred six thousand, twenty-five".