20045220025051 has 24 divisors (see below), whose sum is σ = 22657922302176. Its totient is φ = 17692208202240.

The previous prime is 20045220025031. The next prime is 20045220025069. The reversal of 20045220025051 is 15052002254002.

It is not a de Polignac number, because 20045220025051 - 2⁹ = 20045220024539 is a prime.

It is a super-2 number, since 2×20045220025051² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20045220025031) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9510211 + ... + 11425171.

It is an arithmetic number, because the mean of its divisors is an integer number (944080095924).

Almost surely, 2^{20045220025051} is an apocalyptic number.

20045220025051 is a deficient number, since it is larger than the sum of its proper divisors (2612702277125).

20045220025051 is a wasteful number, since it uses less digits than its factorization.

20045220025051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1917703 (or 1917690 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 28.

Adding to 20045220025051 its reverse (15052002254002), we get a palindrome (35097222279053).

The spelling of 20045220025051 in words is "twenty trillion, forty-five billion, two hundred twenty million, twenty-five thousand, fifty-one".