20960225 has 54 divisors (see below), whose sum is σ = 31689378. Its totient is φ = 13728000.

The previous prime is 20960197. The next prime is 20960263. The reversal of 20960225 is 52206902.

It can be written as a sum of positive squares in 9 ways, for example, as 18309841 + 2650384 = 4279^2 + 1628^2 .

It is not a de Polignac number, because 20960225 - 2¹² = 20956129 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20960194 and 20960203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 511205 + ... + 511245.

Almost surely, 2^20960225 is an apocalyptic number.

20960225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20960225 is a deficient number, since it is larger than the sum of its proper divisors (10729153).

20960225 is a wasteful number, since it uses less digits than its factorization.

20960225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99 (or 70 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 20960225 is about 4578.2338297645. The cubic root of 20960225 is about 275.7181230921.

The spelling of 20960225 in words is "twenty million, nine hundred sixty thousand, two hundred twenty-five".