20862225 has 48 divisors (see below), whose sum is σ = 39600640. Its totient is φ = 10756800.

The previous prime is 20862221. The next prime is 20862239. The reversal of 20862225 is 52226802.

It is not a de Polignac number, because 20862225 - 2² = 20862221 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20862221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20427 + ... + 21423.

Almost surely, 2^20862225 is an apocalyptic number.

20862225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20862225 is a deficient number, since it is larger than the sum of its proper divisors (18738415).

20862225 is a wasteful number, since it uses less digits than its factorization.

20862225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1047 (or 1036 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 20862225 is about 4567.5184728690. The cubic root of 20862225 is about 275.2877428959.

The spelling of 20862225 in words is "twenty million, eight hundred sixty-two thousand, two hundred twenty-five".