25520670222266 has 8 divisors (see below), whose sum is σ = 38281041103860. Its totient is φ = 12760323187648.

The previous prime is 25520670222253. The next prime is 25520670222287. The reversal of 25520670222266 is 66222207602552.

It can be written as a sum of positive squares in 2 ways, for example, as 20697722775625 + 4822947446641 = 4549475^2 + 2196121^2 .

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 25520670222266.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2990021 + ... + 7744776.

Almost surely, 2^{25520670222266} is an apocalyptic number.

25520670222266 is a deficient number, since it is larger than the sum of its proper divisors (12760370881594).

25520670222266 is a wasteful number, since it uses less digits than its factorization.

25520670222266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11923488.

The product of its (nonzero) digits is 2419200, while the sum is 47.

The spelling of 25520670222266 in words is "twenty-five trillion, five hundred twenty billion, six hundred seventy million, two hundred twenty-two thousand, two hundred sixty-six".