20225451000 has 128 divisors (see below), whose sum is σ = 63215380800. Its totient is φ = 5383884800.

The previous prime is 20225450977. The next prime is 20225451011. The reversal of 20225451000 is 15452202.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1773316 + ... + 1784684.

Almost surely, 2^20225451000 is an apocalyptic number.

20225451000 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 20225451000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31607690400).

20225451000 is an abundant number, since it is smaller than the sum of its proper divisors (42989929800).

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

20225451000 is a wasteful number, since it uses less digits than its factorization.

20225451000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11986 (or 11972 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The spelling of 20225451000 in words is "twenty billion, two hundred twenty-five million, four hundred fifty-one thousand".