256126205 has 8 divisors (see below), whose sum is σ = 307944504. Its totient is φ = 204505600.

The previous prime is 256126187. The next prime is 256126223. The reversal of 256126205 is 502621652.

It is an interprime number because it is at equal distance from previous prime (256126187) and next prime (256126223).

It can be written as a sum of positive squares in 4 ways, for example, as 53860921 + 202265284 = 7339^2 + 14222^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-256126205 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46556 + ... + 51765.

It is an arithmetic number, because the mean of its divisors is an integer number (38493063).

Almost surely, 2^256126205 is an apocalyptic number.

It is an amenable number.

256126205 is a deficient number, since it is larger than the sum of its proper divisors (51818299).

256126205 is an equidigital number, since it uses as much as digits as its factorization.

256126205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98847.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 256126205 is about 16003.9434202949. The cubic root of 256126205 is about 635.0647463276.

Adding to 256126205 its reverse (502621652), we get a palindrome (758747857).

The spelling of 256126205 in words is "two hundred fifty-six million, one hundred twenty-six thousand, two hundred five".