20557425862 has 4 divisors (see below), whose sum is σ = 30836138796. Its totient is φ = 10278712930.

The previous prime is 20557425821. The next prime is 20557425881. The reversal of 20557425862 is 26852475502.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5139356464 + ... + 5139356467.

It is an arithmetic number, because the mean of its divisors is an integer number (7709034699).

Almost surely, 2^20557425862 is an apocalyptic number.

20557425862 is a deficient number, since it is larger than the sum of its proper divisors (10278712934).

20557425862 is a wasteful number, since it uses less digits than its factorization.

20557425862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10278712933.

The product of its (nonzero) digits is 1344000, while the sum is 46.

The spelling of 20557425862 in words is "twenty billion, five hundred fifty-seven million, four hundred twenty-five thousand, eight hundred sixty-two".