25693399501057 has 4 divisors (see below), whose sum is σ = 25693439183280. Its totient is φ = 25693359818836.

The previous prime is 25693399501051. The next prime is 25693399501069. The reversal of 25693399501057 is 75010599339652.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25693399501057 - 2²³ = 25693391112449 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25693399501057.

It is not an unprimeable number, because it can be changed into a prime (25693399501051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18853507 + ... + 20170312.

It is an arithmetic number, because the mean of its divisors is an integer number (6423359795820).

Almost surely, 2^{25693399501057} is an apocalyptic number.

It is an amenable number.

25693399501057 is a deficient number, since it is larger than the sum of its proper divisors (39682223).

25693399501057 is an equidigital number, since it uses as much as digits as its factorization.

25693399501057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39682222.

The product of its (nonzero) digits is 68890500, while the sum is 64.

The spelling of 25693399501057 in words is "twenty-five trillion, six hundred ninety-three billion, three hundred ninety-nine million, five hundred one thousand, fifty-seven".