20552225231 has 8 divisors (see below), whose sum is σ = 21075876000. Its totient is φ = 20035079680.

The previous prime is 20552225203. The next prime is 20552225233. The reversal of 20552225231 is 13252225502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20552225231 - 2³⁴ = 3372356047 is a prime.

It is a super-2 number, since 2×20552225231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20552225194 and 20552225203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20552225233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1619906 + ... + 1632543.

It is an arithmetic number, because the mean of its divisors is an integer number (2634484500).

Almost surely, 2^20552225231 is an apocalyptic number.

20552225231 is a deficient number, since it is larger than the sum of its proper divisors (523650769).

20552225231 is an equidigital number, since it uses as much as digits as its factorization.

20552225231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3252609.

The product of its (nonzero) digits is 12000, while the sum is 29.

The spelling of 20552225231 in words is "twenty billion, five hundred fifty-two million, two hundred twenty-five thousand, two hundred thirty-one".