253784225 has 6 divisors (see below), whose sum is σ = 314692470. Its totient is φ = 203027360.

The previous prime is 253784213. The next prime is 253784269. The reversal of 253784225 is 522487352.

It can be written as a sum of positive squares in 3 ways, for example, as 369664 + 253414561 = 608^2 + 15919^2 .

It is not a de Polignac number, because 253784225 - 2¹⁸ = 253522081 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5075660 + ... + 5075709.

It is an arithmetic number, because the mean of its divisors is an integer number (52448745).

Almost surely, 2^253784225 is an apocalyptic number.

253784225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

253784225 is a deficient number, since it is larger than the sum of its proper divisors (60908245).

253784225 is a wasteful number, since it uses less digits than its factorization.

253784225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10151379 (or 10151374 counting only the distinct ones).

The product of its digits is 134400, while the sum is 38.

The square root of 253784225 is about 15930.6065484024. The cubic root of 253784225 is about 633.1231704959.

The spelling of 253784225 in words is "two hundred fifty-three million, seven hundred eighty-four thousand, two hundred twenty-five".