2561270922226 has 4 divisors (see below), whose sum is σ = 3841906383342. Its totient is φ = 1280635461112.

The previous prime is 2561270922179. The next prime is 2561270922229. The reversal of 2561270922226 is 6222290721652.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1743152481225 + 818118441001 = 1320285^2 + 904499^2 .

It is not an unprimeable number, because it can be changed into a prime (2561270922229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 640317730555 + ... + 640317730558.

Almost surely, 2^{2561270922226} is an apocalyptic number.

2561270922226 is a deficient number, since it is larger than the sum of its proper divisors (1280635461116).

2561270922226 is a wasteful number, since it uses less digits than its factorization.

2561270922226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1280635461115.

The product of its (nonzero) digits is 725760, while the sum is 46.

The spelling of 2561270922226 in words is "two trillion, five hundred sixty-one billion, two hundred seventy million, nine hundred twenty-two thousand, two hundred twenty-six".