20225532144 has 40 divisors (see below), whose sum is σ = 52268318800. Its totient is φ = 6739388928.

The previous prime is 20225532139. The next prime is 20225532163. The reversal of 20225532144 is 44123552202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58932 + ... + 209580.

It is an arithmetic number, because the mean of its divisors is an integer number (1306707970).

Almost surely, 2^20225532144 is an apocalyptic number.

20225532144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20225532144 is an abundant number, since it is smaller than the sum of its proper divisors (32042786656).

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

20225532144 is a wasteful number, since it uses less digits than its factorization.

20225532144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153457 (or 153451 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

The spelling of 20225532144 in words is "twenty billion, two hundred twenty-five million, five hundred thirty-two thousand, one hundred forty-four".