125813369027 has 4 divisors (see below), whose sum is σ = 126291747120. Its totient is φ = 125334990936.

The previous prime is 125813368981. The next prime is 125813369051. The reversal of 125813369027 is 720963318521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 720963318521 = 602977 ⋅1195673.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125813369027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125813360027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239188652 + ... + 239189177.

It is an arithmetic number, because the mean of its divisors is an integer number (31572936780).

Almost surely, 2^125813369027 is an apocalyptic number.

125813369027 is a deficient number, since it is larger than the sum of its proper divisors (478378093).

125813369027 is an equidigital number, since it uses as much as digits as its factorization.

125813369027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478378092.

The product of its (nonzero) digits is 544320, while the sum is 47.

The spelling of 125813369027 in words is "one hundred twenty-five billion, eight hundred thirteen million, three hundred sixty-nine thousand, twenty-seven".