225205053938 has 18 divisors (see below), whose sum is σ = 358865679981. Its totient is φ = 105973479904.

The previous prime is 225205053937. The next prime is 225205053943. The reversal of 225205053938 is 839350502522.

It can be written as a sum of positive squares in 2 ways, for example, as 206113276009 + 19091777929 = 453997^2 + 138173^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=335563.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225205053937) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 11399273 + ... + 11419011.

Almost surely, 2^225205053938 is an apocalyptic number.

225205053938 is a deficient number, since it is larger than the sum of its proper divisors (133660626043).

225205053938 is an frugal number, since it uses more digits than its factorization.

225205053938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39514 (or 19758 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 44.

The spelling of 225205053938 in words is "two hundred twenty-five billion, two hundred five million, fifty-three thousand, nine hundred thirty-eight".