256333125 has 20 divisors (see below), whose sum is σ = 427088288. Its totient is φ = 136710000.

The previous prime is 256333109. The next prime is 256333153. The reversal of 256333125 is 521333652.

It is not a de Polignac number, because 256333125 - 2⁴ = 256333109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 256333092 and 256333101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 66481 + ... + 70230.

Almost surely, 2^256333125 is an apocalyptic number.

256333125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

256333125 is a deficient number, since it is larger than the sum of its proper divisors (170755163).

256333125 is an equidigital number, since it uses as much as digits as its factorization.

256333125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136734 (or 136719 counting only the distinct ones).

The product of its digits is 16200, while the sum is 30.

The square root of 256333125 is about 16010.4067718469. The cubic root of 256333125 is about 635.2357196255.

Adding to 256333125 its reverse (521333652), we get a palindrome (777666777).

The spelling of 256333125 in words is "two hundred fifty-six million, three hundred thirty-three thousand, one hundred twenty-five".