253986878225 has 72 divisors (see below), whose sum is σ = 328063169280. Its totient is φ = 195008486400.

The previous prime is 253986878221. The next prime is 253986878231. The reversal of 253986878225 is 522878689352.

It is not a de Polignac number, because 253986878225 - 2² = 253986878221 is a prime.

It is not an unprimeable number, because it can be changed into a prime (253986878221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 965729444 + ... + 965729706.

Almost surely, 2^253986878225 is an apocalyptic number.

253986878225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

253986878225 is a deficient number, since it is larger than the sum of its proper divisors (74076291055).

253986878225 is an equidigital number, since it uses as much as digits as its factorization.

253986878225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591 (or 515 counting only the distinct ones).

The product of its digits is 116121600, while the sum is 65.

The spelling of 253986878225 in words is "two hundred fifty-three billion, nine hundred eighty-six million, eight hundred seventy-eight thousand, two hundred twenty-five".