20533254225 has 96 divisors (see below), whose sum is σ = 37820162688. Its totient is φ = 9745920000.

The previous prime is 20533254197. The next prime is 20533254233. The reversal of 20533254225 is 52245233502.

It is not a de Polignac number, because 20533254225 - 2¹³ = 20533246033 is a prime.

It is a super-2 number, since 2×20533254225² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 12127479 + ... + 12129171.

It is an arithmetic number, because the mean of its divisors is an integer number (393960028).

Almost surely, 2^20533254225 is an apocalyptic number.

20533254225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20533254225 is a deficient number, since it is larger than the sum of its proper divisors (17286908463).

20533254225 is a wasteful number, since it uses less digits than its factorization.

20533254225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2019 (or 2014 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 33.

Adding to 20533254225 its reverse (52245233502), we get a palindrome (72778487727).

The spelling of 20533254225 in words is "twenty billion, five hundred thirty-three million, two hundred fifty-four thousand, two hundred twenty-five".