253725638 has 8 divisors (see below), whose sum is σ = 392865600. Its totient is φ = 122770440.

The previous prime is 253725623. The next prime is 253725653. The reversal of 253725638 is 836527352.

It is an interprime number because it is at equal distance from previous prime (253725623) and next prime (253725653).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 253725595 and 253725604.

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 3 ways as a sum of consecutive naturals, for example, 2046113 + ... + 2046236.

It is an arithmetic number, because the mean of its divisors is an integer number (49108200).

Almost surely, 2^253725638 is an apocalyptic number.

253725638 is a deficient number, since it is larger than the sum of its proper divisors (139139962).

253725638 is a wasteful number, since it uses less digits than its factorization.

253725638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4092382.

The product of its digits is 302400, while the sum is 41.

The square root of 253725638 is about 15928.7676233913. The cubic root of 253725638 is about 633.0744471603.

The spelling of 253725638 in words is "two hundred fifty-three million, seven hundred twenty-five thousand, six hundred thirty-eight".