20266225 has 12 divisors (see below), whose sum is σ = 28720384. Its totient is φ = 13896720.

The previous prime is 20266223. The next prime is 20266229. The reversal of 20266225 is 52266202.

It is not a de Polignac number, because 20266225 - 2¹ = 20266223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 20266225.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20266223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57729 + ... + 58078.

Almost surely, 2^20266225 is an apocalyptic number.

20266225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20266225 is a deficient number, since it is larger than the sum of its proper divisors (8454159).

20266225 is a wasteful number, since it uses less digits than its factorization.

20266225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115824 (or 115819 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 20266225 is about 4501.8024168104. The cubic root of 20266225 is about 272.6408664826.

The spelling of 20266225 in words is "twenty million, two hundred sixty-six thousand, two hundred twenty-five".