126555525 has 36 divisors (see below), whose sum is σ = 228960420. Its totient is φ = 66816000.

The previous prime is 126555521. The next prime is 126555553. The reversal of 126555525 is 525555621.

126555525 is a `hidden beast` number, since 126 + 5 + 5 + 5 + 525 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 60516 + 126495009 = 246^2 + 11247^2 .

It is not a de Polignac number, because 126555525 - 2² = 126555521 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 126555525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126555521) 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 35 ways as a sum of consecutive naturals, for example, 19941 + ... + 25509.

Almost surely, 2^126555525 is an apocalyptic number.

126555525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

126555525 is a deficient number, since it is larger than the sum of its proper divisors (102404895).

126555525 is a wasteful number, since it uses less digits than its factorization.

126555525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5686 (or 5678 counting only the distinct ones).

The product of its digits is 75000, while the sum is 36.

The square root of 126555525 is about 11249.6899957288. The cubic root of 126555525 is about 502.0654890938.

The spelling of 126555525 in words is "one hundred twenty-six million, five hundred fifty-five thousand, five hundred twenty-five".