25887786782 has 16 divisors (see below), whose sum is σ = 45620435952. Its totient is φ = 10862008320.

The previous prime is 25887786763. The next prime is 25887786791. The reversal of 25887786782 is 28768778852.

It is a congruent number.

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, 45258083 + ... + 45258654.

It is an arithmetic number, because the mean of its divisors is an integer number (2851277247).

Almost surely, 2^25887786782 is an apocalyptic number.

25887786782 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

25887786782 is a deficient number, since it is larger than the sum of its proper divisors (19732649170).

25887786782 is a wasteful number, since it uses less digits than its factorization.

25887786782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90516763.

The product of its digits is 168591360, while the sum is 68.

The spelling of 25887786782 in words is "twenty-five billion, eight hundred eighty-seven million, seven hundred eighty-six thousand, seven hundred eighty-two".