253425478 has 16 divisors (see below), whose sum is σ = 382892400. Its totient is φ = 125798400.

The previous prime is 253425467. The next prime is 253425493. The reversal of 253425478 is 874524352.

It is a self number, because there is not a number n which added to its sum of digits gives 253425478.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 215833 + ... + 217003.

It is an arithmetic number, because the mean of its divisors is an integer number (23930775).

Almost surely, 2^253425478 is an apocalyptic number.

253425478 is a deficient number, since it is larger than the sum of its proper divisors (129466922).

253425478 is a wasteful number, since it uses less digits than its factorization.

253425478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1863.

The product of its digits is 268800, while the sum is 40.

The square root of 253425478 is about 15919.3428884486. The cubic root of 253425478 is about 632.8247041569.

The spelling of 253425478 in words is "two hundred fifty-three million, four hundred twenty-five thousand, four hundred seventy-eight".