25660047135457 has 8 divisors (see below), whose sum is σ = 30869229636800. Its totient is φ = 20836730004624.

The previous prime is 25660047135433. The next prime is 25660047135469. The reversal of 25660047135457 is 75453174006652.

It is a happy number.

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 25660047135457 - 2⁷ = 25660047135329 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25660047135398 and 25660047135407.

It is not an unprimeable number, because it can be changed into a prime (25660047135427) 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, 96466342482 + ... + 96466342747.

It is an arithmetic number, because the mean of its divisors is an integer number (3858653704600).

Almost surely, 2^{25660047135457} is an apocalyptic number.

It is an amenable number.

25660047135457 is a deficient number, since it is larger than the sum of its proper divisors (5209182501343).

25660047135457 is a wasteful number, since it uses less digits than its factorization.

25660047135457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192932685255.

The product of its (nonzero) digits is 21168000, while the sum is 55.

The spelling of 25660047135457 in words is "twenty-five trillion, six hundred sixty billion, forty-seven million, one hundred thirty-five thousand, four hundred fifty-seven".