20251474880 has 224 divisors, whose sum is σ = 61401594240. Its totient is φ = 6187991040.

The previous prime is 20251474879. The next prime is 20251474889. The reversal of 20251474880 is 8847415202.

It is a tau number, because it is divible by the number of its divisors (224).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20251474889) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 832490 + ... + 856470.

It is an arithmetic number, because the mean of its divisors is an integer number (274114260).

Almost surely, 2^20251474880 is an apocalyptic number.

20251474880 is a gapful number since it is divisible by the number (20) 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 20251474880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30700797120).

20251474880 is an abundant number, since it is smaller than the sum of its proper divisors (41150119360).

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

20251474880 is a wasteful number, since it uses less digits than its factorization.

20251474880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24047 (or 24037 counting only the distinct ones).

The product of its (nonzero) digits is 143360, while the sum is 41.

The spelling of 20251474880 in words is "twenty billion, two hundred fifty-one million, four hundred seventy-four thousand, eight hundred eighty".