25787678753 has 16 divisors (see below), whose sum is σ = 26290656000. Its totient is φ = 25288992960.

The previous prime is 25787678747. The next prime is 25787678773. The reversal of 25787678753 is 35787678752.

It is a cyclic number.

It is not a de Polignac number, because 25787678753 - 2³⁴ = 8607809569 is a prime.

It is a Duffinian number.

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 25787678753.

It is not an unprimeable number, because it can be changed into a prime (25787678723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12462803 + ... + 12464871.

It is an arithmetic number, because the mean of its divisors is an integer number (1643166000).

Almost surely, 2^25787678753 is an apocalyptic number.

It is an amenable number.

25787678753 is a deficient number, since it is larger than the sum of its proper divisors (502977247).

25787678753 is a wasteful number, since it uses less digits than its factorization.

25787678753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2992.

The product of its digits is 138297600, while the sum is 65.

Subtracting 25787678753 from its reverse (35787678752), we obtain a palindrome (9999999999).

The spelling of 25787678753 in words is "twenty-five billion, seven hundred eighty-seven million, six hundred seventy-eight thousand, seven hundred fifty-three".