20245456525206 has 128 divisors (see below), whose sum is σ = 45784979799552. Its totient is φ = 5914719360000.

The previous prime is 20245456525117. The next prime is 20245456525207. The reversal of 20245456525206 is 60252565454202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20245456525207) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 142868220 + ... + 143009856.

It is an arithmetic number, because the mean of its divisors is an integer number (357695154684).

Almost surely, 2^{20245456525206} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20245456525206, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22892489899776).

20245456525206 is an abundant number, since it is smaller than the sum of its proper divisors (25539523274346).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20245456525206 is a wasteful number, since it uses less digits than its factorization.

20245456525206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142318.

The product of its (nonzero) digits is 5760000, while the sum is 48.

The spelling of 20245456525206 in words is "twenty trillion, two hundred forty-five billion, four hundred fifty-six million, five hundred twenty-five thousand, two hundred six".