125636414529 has 4 divisors (see below), whose sum is σ = 167515219376. Its totient is φ = 83757609684.

The previous prime is 125636414507. The next prime is 125636414531. The reversal of 125636414529 is 925414636521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 925414636521 = 3 ⋅308471545507.

It is not a de Polignac number, because 125636414529 - 2⁷ = 125636414401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125636414129) 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 3 ways as a sum of consecutive naturals, for example, 20939402419 + ... + 20939402424.

It is an arithmetic number, because the mean of its divisors is an integer number (41878804844).

Almost surely, 2^125636414529 is an apocalyptic number.

It is an amenable number.

125636414529 is a deficient number, since it is larger than the sum of its proper divisors (41878804847).

125636414529 is an equidigital number, since it uses as much as digits as its factorization.

125636414529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41878804846.

The product of its digits is 1555200, while the sum is 48.

The spelling of 125636414529 in words is "one hundred twenty-five billion, six hundred thirty-six million, four hundred fourteen thousand, five hundred twenty-nine".