256212205 has 16 divisors (see below), whose sum is σ = 310752000. Its totient is φ = 202783680.

The previous prime is 256212137. The next prime is 256212223. The reversal of 256212205 is 502212652.

It is a happy number.

It is not a de Polignac number, because 256212205 - 2²¹ = 254115053 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 256212205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 246076 + ... + 247114.

It is an arithmetic number, because the mean of its divisors is an integer number (19422000).

Almost surely, 2^256212205 is an apocalyptic number.

It is an amenable number.

256212205 is a deficient number, since it is larger than the sum of its proper divisors (54539795).

256212205 is a wasteful number, since it uses less digits than its factorization.

256212205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1524.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 256212205 is about 16006.6300325834. The cubic root of 256212205 is about 635.1358173536.

Adding to 256212205 its reverse (502212652), we get a palindrome (758424857).

The spelling of 256212205 in words is "two hundred fifty-six million, two hundred twelve thousand, two hundred five".