126312525 has 18 divisors (see below), whose sum is σ = 226240170. Its totient is φ = 67366560.

The previous prime is 126312509. The next prime is 126312539. The reversal of 126312525 is 525213621.

It is a happy number.

126312525 is a `hidden beast` number, since 1 + 2 + 631 + 2 + 5 + 25 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 19881 + 126292644 = 141^2 + 11238^2 .

It is not a de Polignac number, because 126312525 - 2⁴ = 126312509 is a prime.

It is a congruent number.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 280470 + ... + 280919.

Almost surely, 2^126312525 is an apocalyptic number.

126312525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

126312525 is a deficient number, since it is larger than the sum of its proper divisors (99927645).

126312525 is a wasteful number, since it uses less digits than its factorization.

126312525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561405 (or 561397 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 126312525 is about 11238.8845087046. The cubic root of 126312525 is about 501.7439435830.

The spelling of 126312525 in words is "one hundred twenty-six million, three hundred twelve thousand, five hundred twenty-five".