225949275378 has 54 divisors (see below), whose sum is σ = 493073001837. Its totient is φ = 74779310160.

The previous prime is 225949275347. The next prime is 225949275379. The reversal of 225949275378 is 873572949522.

225949275378 is a `hidden beast` number, since 2 + 2 + 5 + 9 + 4 + 92 + 7 + 537 + 8 = 666.

225949275378 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 136562028849 + 89387246529 = 369543^2 + 298977^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=336117.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (225949275379) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 365022753 + ... + 365023371.

Almost surely, 2^225949275378 is an apocalyptic number.

225949275378 is an abundant number, since it is smaller than the sum of its proper divisors (267123726459).

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

225949275378 is an frugal number, since it uses more digits than its factorization.

225949275378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1608 (or 805 counting only the distinct ones).

The product of its digits is 76204800, while the sum is 63.

The spelling of 225949275378 in words is "two hundred twenty-five billion, nine hundred forty-nine million, two hundred seventy-five thousand, three hundred seventy-eight".