20125220133 has 8 divisors (see below), whose sum is σ = 28000306368. Its totient is φ = 12833473664.

The previous prime is 20125220113. The next prime is 20125220149. The reversal of 20125220133 is 33102252102.

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 20125220133 - 2¹⁸ = 20124957989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20125220113) 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, 145834860 + ... + 145834997.

It is an arithmetic number, because the mean of its divisors is an integer number (3500038296).

Almost surely, 2^20125220133 is an apocalyptic number.

20125220133 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20125220133 is a deficient number, since it is larger than the sum of its proper divisors (7875086235).

20125220133 is a wasteful number, since it uses less digits than its factorization.

20125220133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291669883.

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 20125220133 its reverse (33102252102), we get a palindrome (53227472235).

The spelling of 20125220133 in words is "twenty billion, one hundred twenty-five million, two hundred twenty thousand, one hundred thirty-three".