21846247125 has 64 divisors (see below), whose sum is σ = 37062005760. Its totient is φ = 11424840000.

The previous prime is 21846247123. The next prime is 21846247133. The reversal of 21846247125 is 52174264812.

It is not a de Polignac number, because 21846247125 - 2¹ = 21846247123 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21846247123) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10862370 + ... + 10864380.

It is an arithmetic number, because the mean of its divisors is an integer number (579093840).

Almost surely, 2^21846247125 is an apocalyptic number.

21846247125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21846247125 is a deficient number, since it is larger than the sum of its proper divisors (15215758635).

21846247125 is a wasteful number, since it uses less digits than its factorization.

21846247125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2579 (or 2569 counting only the distinct ones).

The product of its digits is 215040, while the sum is 42.

The spelling of 21846247125 in words is "twenty-one billion, eight hundred forty-six million, two hundred forty-seven thousand, one hundred twenty-five".