225010621020 has 192 divisors, whose sum is σ = 650553007104. Its totient is φ = 58076282880.

The previous prime is 225010621009. The next prime is 225010621027. The reversal of 225010621020 is 20126010522.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225010621027) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 154858614 + ... + 154860066.

It is an arithmetic number, because the mean of its divisors is an integer number (3388296912).

Almost surely, 2^225010621020 is an apocalyptic number.

225010621020 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 225010621020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (325276503552).

225010621020 is an abundant number, since it is smaller than the sum of its proper divisors (425542386084).

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

225010621020 is a wasteful number, since it uses less digits than its factorization.

225010621020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2012 (or 2010 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 225010621020 its reverse (20126010522), we get a palindrome (245136631542).

The spelling of 225010621020 in words is "two hundred twenty-five billion, ten million, six hundred twenty-one thousand, twenty".