256406262202 has 16 divisors (see below), whose sum is σ = 407247889320. Its totient is φ = 120657499648.

The previous prime is 256406262191. The next prime is 256406262251. The reversal of 256406262202 is 202262604652.

It can be written as a sum of positive squares in 4 ways, for example, as 170322115401 + 86084146801 = 412701^2 + 293401^2 .

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, 974574 + ... + 1209382.

Almost surely, 2^256406262202 is an apocalyptic number.

256406262202 is a deficient number, since it is larger than the sum of its proper divisors (150841627118).

256406262202 is a wasteful number, since it uses less digits than its factorization.

256406262202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266945.

The product of its (nonzero) digits is 138240, while the sum is 37.

Adding to 256406262202 its reverse (202262604652), we get a palindrome (458668866854).

The spelling of 256406262202 in words is "two hundred fifty-six billion, four hundred six million, two hundred sixty-two thousand, two hundred two".