125105023427 has 4 divisors (see below), whose sum is σ = 129140669376. Its totient is φ = 121069377480.

The previous prime is 125105023411. The next prime is 125105023429. The reversal of 125105023427 is 724320501521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 125105023427 - 2⁴ = 125105023411 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 125105023393 and 125105023402.

It is not an unprimeable number, because it can be changed into a prime (125105023429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2017822928 + ... + 2017822989.

It is an arithmetic number, because the mean of its divisors is an integer number (32285167344).

Almost surely, 2^125105023427 is an apocalyptic number.

125105023427 is a deficient number, since it is larger than the sum of its proper divisors (4035645949).

125105023427 is an equidigital number, since it uses as much as digits as its factorization.

125105023427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4035645948.

The product of its (nonzero) digits is 16800, while the sum is 32.

Adding to 125105023427 its reverse (724320501521), we get a palindrome (849425524948).

The spelling of 125105023427 in words is "one hundred twenty-five billion, one hundred five million, twenty-three thousand, four hundred twenty-seven".