20045241625220 has 36 divisors (see below), whose sum is σ = 48967661686860. Its totient is φ = 6872654271168.

The previous prime is 20045241625217. The next prime is 20045241625231. The reversal of 20045241625220 is 2252614254002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 13336271356996 + 6708970268224 = 3651886^2 + 2590168^2 .

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10227163115 + ... + 10227165074.

It is an arithmetic number, because the mean of its divisors is an integer number (1360212824635).

Almost surely, 2^{20045241625220} is an apocalyptic number.

20045241625220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20045241625220 is an abundant number, since it is smaller than the sum of its proper divisors (28922420061640).

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

20045241625220 is a wasteful number, since it uses less digits than its factorization.

20045241625220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20454328212 (or 20454328203 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 35.

Adding to 20045241625220 its reverse (2252614254002), we get a palindrome (22297855879222).

The spelling of 20045241625220 in words is "twenty trillion, forty-five billion, two hundred forty-one million, six hundred twenty-five thousand, two hundred twenty".