21883078725 has 96 divisors (see below), whose sum is σ = 38883297024. Its totient is φ = 10820812800.

The previous prime is 21883078703. The next prime is 21883078727. The reversal of 21883078725 is 52787038812.

It is not a de Polignac number, because 21883078725 - 2⁶ = 21883078661 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21883078727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 36902029 + ... + 36902621.

It is an arithmetic number, because the mean of its divisors is an integer number (405034344).

Almost surely, 2^21883078725 is an apocalyptic number.

21883078725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21883078725 is a deficient number, since it is larger than the sum of its proper divisors (17000218299).

21883078725 is a wasteful number, since it uses less digits than its factorization.

21883078725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1007 (or 1002 counting only the distinct ones).

The product of its (nonzero) digits is 1505280, while the sum is 51.

The spelling of 21883078725 in words is "twenty-one billion, eight hundred eighty-three million, seventy-eight thousand, seven hundred twenty-five".