20235550225 has 24 divisors (see below), whose sum is σ = 27379631520. Its totient is φ = 14713296000.

The previous prime is 20235550201. The next prime is 20235550229. The reversal of 20235550225 is 52205553202.

It is not a de Polignac number, because 20235550225 - 2³³ = 11645615633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20235550229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2033061 + ... + 2042989.

It is an arithmetic number, because the mean of its divisors is an integer number (1140817980).

Almost surely, 2^20235550225 is an apocalyptic number.

20235550225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20235550225 is a deficient number, since it is larger than the sum of its proper divisors (7144081295).

20235550225 is a wasteful number, since it uses less digits than its factorization.

20235550225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17361 (or 17356 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 31.

The spelling of 20235550225 in words is "twenty billion, two hundred thirty-five million, five hundred fifty thousand, two hundred twenty-five".