26257866825 has 24 divisors (see below), whose sum is σ = 43419898528. Its totient is φ = 14001972480.

The previous prime is 26257866781. The next prime is 26257866847. The reversal of 26257866825 is 52866875262.

It is not a de Polignac number, because 26257866825 - 2²² = 26253672521 is a prime.

It is a Duffinian number.

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, 519057 + ... + 567393.

Almost surely, 2^26257866825 is an apocalyptic number.

26257866825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

26257866825 is a deficient number, since it is larger than the sum of its proper divisors (17162031703).

26257866825 is a wasteful number, since it uses less digits than its factorization.

26257866825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55593 (or 55588 counting only the distinct ones).

The product of its digits is 19353600, while the sum is 57.

The spelling of 26257866825 in words is "twenty-six billion, two hundred fifty-seven million, eight hundred sixty-six thousand, eight hundred twenty-five".