25557695311679 has 8 divisors (see below), whose sum is σ = 25603073952288. Its totient is φ = 25512320424960.

The previous prime is 25557695311649. The next prime is 25557695311697. The reversal of 25557695311679 is 97611359675552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25557695311679 - 2¹² = 25557695307583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25557695311619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12870419 + ... + 14722875.

It is an arithmetic number, because the mean of its divisors is an integer number (3200384244036).

Almost surely, 2^{25557695311679} is an apocalyptic number.

25557695311679 is a deficient number, since it is larger than the sum of its proper divisors (45378640609).

25557695311679 is a wasteful number, since it uses less digits than its factorization.

25557695311679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1876945.

The product of its digits is 535815000, while the sum is 71.

The spelling of 25557695311679 in words is "twenty-five trillion, five hundred fifty-seven billion, six hundred ninety-five million, three hundred eleven thousand, six hundred seventy-nine".