21825003269 has 2 divisors, whose sum is σ = 21825003270. Its totient is φ = 21825003268.

The previous prime is 21825003169. The next prime is 21825003271. The reversal of 21825003269 is 96230052812.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17027640100 + 4797363169 = 130490^2 + 69263^2 .

It is a cyclic number.

It is not a de Polignac number, because 21825003269 - 2¹⁶ = 21824937733 is a prime.

It is a super-2 number, since 2×21825003269² (a number of 21 digits) contains 22 as substring.

Together with 21825003271, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21825003289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10912501634 + 10912501635.

It is an arithmetic number, because the mean of its divisors is an integer number (10912501635).

Almost surely, 2^21825003269 is an apocalyptic number.

It is an amenable number.

21825003269 is a deficient number, since it is larger than the sum of its proper divisors (1).

21825003269 is an equidigital number, since it uses as much as digits as its factorization.

21825003269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 38.

The spelling of 21825003269 in words is "twenty-one billion, eight hundred twenty-five million, three thousand, two hundred sixty-nine".