20610225 has 36 divisors (see below), whose sum is σ = 37237200. Its totient is φ = 10896480.

The previous prime is 20610217. The next prime is 20610241. The reversal of 20610225 is 52201602.

It is not a de Polignac number, because 20610225 - 2³ = 20610217 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20610198 and 20610207.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 30946 + ... + 31604.

Almost surely, 2^20610225 is an apocalyptic number.

20610225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20610225 is a deficient number, since it is larger than the sum of its proper divisors (16626975).

20610225 is a wasteful number, since it uses less digits than its factorization.

20610225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814 (or 806 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 20610225 is about 4539.8485657564. The cubic root of 20610225 is about 274.1748267122.

Adding to 20610225 its reverse (52201602), we get a palindrome (72811827).

The spelling of 20610225 in words is "twenty million, six hundred ten thousand, two hundred twenty-five".