26500430425 has 24 divisors (see below), whose sum is σ = 37630280000. Its totient is φ = 18135247680.

The previous prime is 26500430417. The next prime is 26500430431. The reversal of 26500430425 is 52403400562.

It is not a de Polignac number, because 26500430425 - 2³ = 26500430417 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64410 + ... + 239059.

Almost surely, 2^26500430425 is an apocalyptic number.

26500430425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

26500430425 is a deficient number, since it is larger than the sum of its proper divisors (11129849575).

26500430425 is a wasteful number, since it uses less digits than its factorization.

26500430425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303985 (or 303980 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 26500430425 its reverse (52403400562), we get a palindrome (78903830987).

The spelling of 26500430425 in words is "twenty-six billion, five hundred million, four hundred thirty thousand, four hundred twenty-five".