225048978 has 96 divisors (see below), whose sum is σ = 610945920. Its totient is φ = 58164480.

The previous prime is 225048973. The next prime is 225048983. The reversal of 225048978 is 879840522.

It is an interprime number because it is at equal distance from previous prime (225048973) and next prime (225048983).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (225048973) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 550038 + ... + 550446.

It is an arithmetic number, because the mean of its divisors is an integer number (6364020).

Almost surely, 2^225048978 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 225048978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (305472960).

225048978 is an abundant number, since it is smaller than the sum of its proper divisors (385896942).

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

225048978 is a wasteful number, since it uses less digits than its factorization.

225048978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832 (or 829 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 225048978 is about 15001.6325111636. The cubic root of 225048978 is about 608.2643288132.

The spelling of 225048978 in words is "two hundred twenty-five million, forty-eight thousand, nine hundred seventy-eight".