22265474550 has 96 divisors (see below), whose sum is σ = 61001095680. Its totient is φ = 5329334400.

The previous prime is 22265474531. The next prime is 22265474551. The reversal of 22265474550 is 5547456222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22265474551) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 44944 + ... + 215756.

It is an arithmetic number, because the mean of its divisors is an integer number (635428080).

Almost surely, 2^22265474550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22265474550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30500547840).

22265474550 is an abundant number, since it is smaller than the sum of its proper divisors (38735621130).

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

22265474550 is a wasteful number, since it uses less digits than its factorization.

22265474550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170918 (or 170913 counting only the distinct ones).

The product of its (nonzero) digits is 672000, while the sum is 42.

The spelling of 22265474550 in words is "twenty-two billion, two hundred sixty-five million, four hundred seventy-four thousand, five hundred fifty".