20225032231 has 4 divisors (see below), whose sum is σ = 20370536200. Its totient is φ = 20079528264.

The previous prime is 20225032213. The next prime is 20225032237. The reversal of 20225032231 is 13223052202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13223052202 = 2 ⋅6611526101.

It is a cyclic number.

It is not a de Polignac number, because 20225032231 - 2¹⁷ = 20224901159 is a prime.

It is a super-2 number, since 2×20225032231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20225032237) 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 3 ways as a sum of consecutive naturals, for example, 72751776 + ... + 72752053.

It is an arithmetic number, because the mean of its divisors is an integer number (5092634050).

Almost surely, 2^20225032231 is an apocalyptic number.

20225032231 is a deficient number, since it is larger than the sum of its proper divisors (145503969).

20225032231 is a wasteful number, since it uses less digits than its factorization.

20225032231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145503968.

The product of its (nonzero) digits is 1440, while the sum is 22.

Adding to 20225032231 its reverse (13223052202), we get a palindrome (33448084433).

The spelling of 20225032231 in words is "twenty billion, two hundred twenty-five million, thirty-two thousand, two hundred thirty-one".