256146253 has 16 divisors (see below), whose sum is σ = 283372992. Its totient is φ = 229600000.

The previous prime is 256146221. The next prime is 256146257. The reversal of 256146253 is 352641652.

It is a cyclic number.

It is not a de Polignac number, because 256146253 - 2⁵ = 256146221 is a prime.

It is a super-2 number, since 2×256146253² = 131221805851880018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256146257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 311583 + ... + 312403.

It is an arithmetic number, because the mean of its divisors is an integer number (17710812).

Almost surely, 2^256146253 is an apocalyptic number.

It is an amenable number.

256146253 is a deficient number, since it is larger than the sum of its proper divisors (27226739).

256146253 is a wasteful number, since it uses less digits than its factorization.

256146253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196.

The product of its digits is 43200, while the sum is 34.

The square root of 256146253 is about 16004.5697536672. The cubic root of 256146253 is about 635.0813155626.

The spelling of 256146253 in words is "two hundred fifty-six million, one hundred forty-six thousand, two hundred fifty-three".