20693225 has 12 divisors (see below), whose sum is σ = 29325504. Its totient is φ = 14189520.

The previous prime is 20693221. The next prime is 20693227. The reversal of 20693225 is 52239602.

It is not a de Polignac number, because 20693225 - 2² = 20693221 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20693221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58949 + ... + 59298.

It is an arithmetic number, because the mean of its divisors is an integer number (2443792).

Almost surely, 2^20693225 is an apocalyptic number.

20693225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20693225 is a deficient number, since it is larger than the sum of its proper divisors (8632279).

20693225 is a wasteful number, since it uses less digits than its factorization.

20693225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118264 (or 118259 counting only the distinct ones).

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

The square root of 20693225 is about 4548.9806550479. The cubic root of 20693225 is about 274.5423794033.

The spelling of 20693225 in words is "twenty million, six hundred ninety-three thousand, two hundred twenty-five".