20963225 has 12 divisors (see below), whose sum is σ = 26095056. Its totient is φ = 16705680.

The previous prime is 20963219. The next prime is 20963273. The reversal of 20963225 is 52236902.

It is not a de Polignac number, because 20963225 - 2¹⁴ = 20946841 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5594 + ... + 8556.

It is an arithmetic number, because the mean of its divisors is an integer number (2174588).

Almost surely, 2^20963225 is an apocalyptic number.

20963225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20963225 is a deficient number, since it is larger than the sum of its proper divisors (5131831).

20963225 is a wasteful number, since it uses less digits than its factorization.

20963225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3256 (or 3251 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 20963225 is about 4578.5614553045. The cubic root of 20963225 is about 275.7312768140.

The spelling of 20963225 in words is "twenty million, nine hundred sixty-three thousand, two hundred twenty-five".