25787627860 has 12 divisors (see below), whose sum is σ = 54154018548. Its totient is φ = 10315051136.

The previous prime is 25787627839. The next prime is 25787627869. The reversal of 25787627860 is 6872678752.

It can be written as a sum of positive squares in 2 ways, for example, as 15595513924 + 10192113936 = 124882^2 + 100956^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25787627795 and 25787627804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25787627869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 644690677 + ... + 644690716.

It is an arithmetic number, because the mean of its divisors is an integer number (4512834879).

Almost surely, 2^25787627860 is an apocalyptic number.

25787627860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25787627860 is an abundant number, since it is smaller than the sum of its proper divisors (28366390688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25787627860 is a wasteful number, since it uses less digits than its factorization.

25787627860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1289381402 (or 1289381400 counting only the distinct ones).

The product of its (nonzero) digits is 15805440, while the sum is 58.

The spelling of 25787627860 in words is "twenty-five billion, seven hundred eighty-seven million, six hundred twenty-seven thousand, eight hundred sixty".