21822200425 has 6 divisors (see below), whose sum is σ = 27059528558. Its totient is φ = 17457760320.

The previous prime is 21822200371. The next prime is 21822200447. The reversal of 21822200425 is 52400222812.

It can be written as a sum of positive squares in 3 ways, for example, as 2441941056 + 19380259369 = 49416^2 + 139213^2 .

It is not a de Polignac number, because 21822200425 - 2¹³ = 21822192233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21822200393 and 21822200402.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 436443984 + ... + 436444033.

Almost surely, 2^21822200425 is an apocalyptic number.

21822200425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21822200425 is a deficient number, since it is larger than the sum of its proper divisors (5237328133).

21822200425 is an equidigital number, since it uses as much as digits as its factorization.

21822200425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 872888027 (or 872888022 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 28.

The spelling of 21822200425 in words is "twenty-one billion, eight hundred twenty-two million, two hundred thousand, four hundred twenty-five".