25755517579 has 8 divisors (see below), whose sum is σ = 28152134640. Its totient is φ = 23368101600.

The previous prime is 25755517573. The next prime is 25755517591. The reversal of 25755517579 is 97571555752.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25755517579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25755517573) 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, 2294412 + ... + 2305609.

It is an arithmetic number, because the mean of its divisors is an integer number (3519016830).

Almost surely, 2^25755517579 is an apocalyptic number.

25755517579 is a deficient number, since it is larger than the sum of its proper divisors (2396617061).

25755517579 is a wasteful number, since it uses less digits than its factorization.

25755517579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4600541.

The product of its digits is 19293750, while the sum is 58.

The spelling of 25755517579 in words is "twenty-five billion, seven hundred fifty-five million, five hundred seventeen thousand, five hundred seventy-nine".