20125467823 has 4 divisors (see below), whose sum is σ = 20139377680. Its totient is φ = 20111557968.

The previous prime is 20125467787. The next prime is 20125467847. The reversal of 20125467823 is 32876452102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20125467823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20125467863) 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, 6952758 + ... + 6955651.

It is an arithmetic number, because the mean of its divisors is an integer number (5034844420).

Almost surely, 2^20125467823 is an apocalyptic number.

20125467823 is a deficient number, since it is larger than the sum of its proper divisors (13909857).

20125467823 is a wasteful number, since it uses less digits than its factorization.

20125467823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13909856.

The product of its (nonzero) digits is 161280, while the sum is 40.

The spelling of 20125467823 in words is "twenty billion, one hundred twenty-five million, four hundred sixty-seven thousand, eight hundred twenty-three".