126510025 has 6 divisors (see below), whose sum is σ = 156872462. Its totient is φ = 101208000.

The previous prime is 126510023. The next prime is 126510031. The reversal of 126510025 is 520015621.

It can be written as a sum of positive squares in 3 ways, for example, as 104976 + 126405049 = 324^2 + 11243^2 .

It is not a de Polignac number, because 126510025 - 2¹ = 126510023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 126509978 and 126510005.

It is not an unprimeable number, because it can be changed into a prime (126510023) 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, 2530176 + ... + 2530225.

Almost surely, 2^126510025 is an apocalyptic number.

It is an amenable number.

126510025 is a deficient number, since it is larger than the sum of its proper divisors (30362437).

126510025 is an equidigital number, since it uses as much as digits as its factorization.

126510025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5060411 (or 5060406 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 126510025 is about 11247.6675359827. The cubic root of 126510025 is about 502.0053133515.

Adding to 126510025 its reverse (520015621), we get a palindrome (646525646).

The spelling of 126510025 in words is "one hundred twenty-six million, five hundred ten thousand, twenty-five".