26287789425 has 24 divisors (see below), whose sum is σ = 43868683296. Its totient is φ = 13889120640.

The previous prime is 26287789421. The next prime is 26287789453. The reversal of 26287789425 is 52498778262.

It is not a de Polignac number, because 26287789425 - 2² = 26287789421 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26287789421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1629844 + ... + 1645893.

It is an arithmetic number, because the mean of its divisors is an integer number (1827861804).

Almost surely, 2^26287789425 is an apocalyptic number.

26287789425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

26287789425 is a deficient number, since it is larger than the sum of its proper divisors (17580893871).

26287789425 is a wasteful number, since it uses less digits than its factorization.

26287789425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3275857 (or 3275852 counting only the distinct ones).

The product of its digits is 27095040, while the sum is 60.

The spelling of 26287789425 in words is "twenty-six billion, two hundred eighty-seven million, seven hundred eighty-nine thousand, four hundred twenty-five".