256612231506253 has 32 divisors (see below), whose sum is σ = 299639897948160. Its totient is φ = 215180808050880.

The previous prime is 256612231506233. The next prime is 256612231506269. The reversal of 256612231506253 is 352605132216652.

It is a happy number.

It is not a de Polignac number, because 256612231506253 - 2²¹ = 256612229409101 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 256612231506197 and 256612231506206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256612231506233) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15429745248 + ... + 15429761878.

It is an arithmetic number, because the mean of its divisors is an integer number (9363746810880).

Almost surely, 2^{256612231506253} is an apocalyptic number.

It is an amenable number.

256612231506253 is a deficient number, since it is larger than the sum of its proper divisors (43027666441907).

256612231506253 is a wasteful number, since it uses less digits than its factorization.

256612231506253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34057.

The product of its (nonzero) digits is 3888000, while the sum is 49.

The spelling of 256612231506253 in words is "two hundred fifty-six trillion, six hundred twelve billion, two hundred thirty-one million, five hundred six thousand, two hundred fifty-three".