20265255472 has 160 divisors (see below), whose sum is σ = 51540986880. Its totient is φ = 7484252160.

The previous prime is 20265255463. The next prime is 20265255481. The reversal of 20265255472 is 27455256202.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20265255463) and next prime (20265255481).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3198804 + ... + 3205132.

It is an arithmetic number, because the mean of its divisors is an integer number (322131168).

Almost surely, 2^20265255472 is an apocalyptic number.

20265255472 is a gapful number since it is divisible by the number (22) 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 20265255472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25770493440).

20265255472 is an abundant number, since it is smaller than the sum of its proper divisors (31275731408).

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

20265255472 is a wasteful number, since it uses less digits than its factorization.

20265255472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6491 (or 6485 counting only the distinct ones).

The product of its (nonzero) digits is 336000, while the sum is 40.

The spelling of 20265255472 in words is "twenty billion, two hundred sixty-five million, two hundred fifty-five thousand, four hundred seventy-two".