25864477514 has 4 divisors (see below), whose sum is σ = 38796716274. Its totient is φ = 12932238756.

The previous prime is 25864477493. The next prime is 25864477531. The reversal of 25864477514 is 41577446852.

It is a happy number.

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., 14186001025 + 11678476489 = 119105^2 + 108067^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6466119377 + ... + 6466119380.

Almost surely, 2^25864477514 is an apocalyptic number.

25864477514 is a deficient number, since it is larger than the sum of its proper divisors (12932238760).

25864477514 is a wasteful number, since it uses less digits than its factorization.

25864477514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12932238759.

The product of its digits is 7526400, while the sum is 53.

The spelling of 25864477514 in words is "twenty-five billion, eight hundred sixty-four million, four hundred seventy-seven thousand, five hundred fourteen".