19225455564 has 72 divisors (see below), whose sum is σ = 52218949440. Its totient is φ = 5489243424.

The previous prime is 19225455553. The next prime is 19225455607. The reversal of 19225455564 is 46555452291.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 918099 + ... + 938805.

Almost surely, 2^19225455564 is an apocalyptic number.

19225455564 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19225455564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26109474720).

19225455564 is an abundant number, since it is smaller than the sum of its proper divisors (32993493876).

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

19225455564 is a wasteful number, since it uses less digits than its factorization.

19225455564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22307 (or 22298 counting only the distinct ones).

The product of its digits is 2160000, while the sum is 48.

The spelling of 19225455564 in words is "nineteen billion, two hundred twenty-five million, four hundred fifty-five thousand, five hundred sixty-four".