25613053066 has 4 divisors (see below), whose sum is σ = 38419579602. Its totient is φ = 12806526532.

The previous prime is 25613053061. The next prime is 25613053079. The reversal of 25613053066 is 66035031652.

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., 25497383041 + 115670025 = 159679^2 + 10755^2 .

It is not an unprimeable number, because it can be changed into a prime (25613053061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6403263265 + ... + 6403263268.

Almost surely, 2^25613053066 is an apocalyptic number.

25613053066 is a deficient number, since it is larger than the sum of its proper divisors (12806526536).

25613053066 is a wasteful number, since it uses less digits than its factorization.

25613053066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12806526535.

The product of its (nonzero) digits is 97200, while the sum is 37.

The spelling of 25613053066 in words is "twenty-five billion, six hundred thirteen million, fifty-three thousand, sixty-six".