20213336225 has 12 divisors (see below), whose sum is σ = 25067156016. Its totient is φ = 16168979280.

The previous prime is 20213336189. The next prime is 20213336251. The reversal of 20213336225 is 52263331202.

It is not a de Polignac number, because 20213336225 - 2⁶ = 20213336161 is a prime.

It is a super-2 number, since 2×20213336225² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 238334 + ... + 311816.

It is an arithmetic number, because the mean of its divisors is an integer number (2088929668).

Almost surely, 2^20213336225 is an apocalyptic number.

20213336225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20213336225 is a deficient number, since it is larger than the sum of its proper divisors (4853819791).

20213336225 is a wasteful number, since it uses less digits than its factorization.

20213336225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84496 (or 84491 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 29.

Adding to 20213336225 its reverse (52263331202), we get a palindrome (72476667427).

The spelling of 20213336225 in words is "twenty billion, two hundred thirteen million, three hundred thirty-six thousand, two hundred twenty-five".