225425818878 has 64 divisors (see below), whose sum is σ = 490296022272. Its totient is φ = 68681894400.

The previous prime is 225425818873. The next prime is 225425818907. The reversal of 225425818878 is 878818524522.

It is a super-2 number, since 2×225425818878² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225425818873) 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, 23372325 + ... + 23381967.

It is an arithmetic number, because the mean of its divisors is an integer number (7660875348).

Almost surely, 2^225425818878 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 225425818878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245148011136).

225425818878 is an abundant number, since it is smaller than the sum of its proper divisors (264870203394).

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

225425818878 is a wasteful number, since it uses less digits than its factorization.

225425818878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12569.

The product of its digits is 22937600, while the sum is 60.

The spelling of 225425818878 in words is "two hundred twenty-five billion, four hundred twenty-five million, eight hundred eighteen thousand, eight hundred seventy-eight".