21825304430 has 16 divisors (see below), whose sum is σ = 39295390464. Its totient is φ = 8727934560.

The previous prime is 21825304379. The next prime is 21825304433. The reversal of 21825304430 is 3440352812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21825304433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231182 + ... + 311601.

It is an arithmetic number, because the mean of its divisors is an integer number (2455961904).

Almost surely, 2^21825304430 is an apocalyptic number.

21825304430 is a deficient number, since it is larger than the sum of its proper divisors (17470086034).

21825304430 is a wasteful number, since it uses less digits than its factorization.

21825304430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546811.

The product of its (nonzero) digits is 23040, while the sum is 32.

The spelling of 21825304430 in words is "twenty-one billion, eight hundred twenty-five million, three hundred four thousand, four hundred thirty".