25407661017 has 8 divisors (see below), whose sum is σ = 34792472896. Its totient is φ = 16480644912.

The previous prime is 25407661001. The next prime is 25407661067. The reversal of 25407661017 is 71016670452.

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

It is not a de Polignac number, because 25407661017 - 2⁴ = 25407661001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25407661067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114448813 + ... + 114449034.

It is an arithmetic number, because the mean of its divisors is an integer number (4349059112).

Almost surely, 2^25407661017 is an apocalyptic number.

It is an amenable number.

25407661017 is a deficient number, since it is larger than the sum of its proper divisors (9384811879).

25407661017 is a wasteful number, since it uses less digits than its factorization.

25407661017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228897887.

The product of its (nonzero) digits is 70560, while the sum is 39.

The spelling of 25407661017 in words is "twenty-five billion, four hundred seven million, six hundred sixty-one thousand, seventeen".