20843046225 has 48 divisors (see below), whose sum is σ = 38461427200. Its totient is φ = 11066362560.

The previous prime is 20843046209. The next prime is 20843046251. The reversal of 20843046225 is 52264034802.

20843046225 is a `hidden beast` number, since 20 + 8 + 4 + 3 + 0 + 4 + 622 + 5 = 666.

It is not a de Polignac number, because 20843046225 - 2⁴ = 20843046209 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20843046225.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 81291 + ... + 219759.

Almost surely, 2^20843046225 is an apocalyptic number.

20843046225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20843046225 is a deficient number, since it is larger than the sum of its proper divisors (17618380975).

20843046225 is a wasteful number, since it uses less digits than its factorization.

20843046225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138711 (or 138700 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

The spelling of 20843046225 in words is "twenty billion, eight hundred forty-three million, forty-six thousand, two hundred twenty-five".