21889683925 has 12 divisors (see below), whose sum is σ = 27285325056. Its totient is φ = 17420058800.

The previous prime is 21889683887. The next prime is 21889683941. The reversal of 21889683925 is 52938698812.

It is not a de Polignac number, because 21889683925 - 2⁷ = 21889683797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2287339 + ... + 2296888.

It is an arithmetic number, because the mean of its divisors is an integer number (2273777088).

Almost surely, 2^21889683925 is an apocalyptic number.

21889683925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21889683925 is a deficient number, since it is larger than the sum of its proper divisors (5395641131).

21889683925 is a wasteful number, since it uses less digits than its factorization.

21889683925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4584428 (or 4584423 counting only the distinct ones).

The product of its digits is 14929920, while the sum is 61.

The spelling of 21889683925 in words is "twenty-one billion, eight hundred eighty-nine million, six hundred eighty-three thousand, nine hundred twenty-five".