126525012639 has 8 divisors (see below), whose sum is σ = 169632061872. Its totient is φ = 83883985920.

The previous prime is 126525012619. The next prime is 126525012671. The reversal of 126525012639 is 936210525621.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 126525012639 - 2¹⁶ = 126524947103 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 126525012639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126525012619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116504994 + ... + 116506079.

It is an arithmetic number, because the mean of its divisors is an integer number (21204007734).

Almost surely, 2^126525012639 is an apocalyptic number.

126525012639 is a deficient number, since it is larger than the sum of its proper divisors (43107049233).

126525012639 is a wasteful number, since it uses less digits than its factorization.

126525012639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233011257.

The product of its (nonzero) digits is 194400, while the sum is 42.

The spelling of 126525012639 in words is "one hundred twenty-six billion, five hundred twenty-five million, twelve thousand, six hundred thirty-nine".