25607116481 has 4 divisors (see below), whose sum is σ = 25618286292. Its totient is φ = 25595946672.

The previous prime is 25607116477. The next prime is 25607116489. The reversal of 25607116481 is 18461170652.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2307841600 + 23299274881 = 48040^2 + 152641^2 .

It is a cyclic number.

It is not a de Polignac number, because 25607116481 - 2² = 25607116477 is a prime.

It is a super-2 number, since 2×25607116481² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25607116489) 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 3 ways as a sum of consecutive naturals, for example, 5581466 + ... + 5586051.

It is an arithmetic number, because the mean of its divisors is an integer number (6404571573).

Almost surely, 2^25607116481 is an apocalyptic number.

It is an amenable number.

25607116481 is a deficient number, since it is larger than the sum of its proper divisors (11169811).

25607116481 is a wasteful number, since it uses less digits than its factorization.

25607116481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11169810.

The product of its (nonzero) digits is 80640, while the sum is 41.

The spelling of 25607116481 in words is "twenty-five billion, six hundred seven million, one hundred sixteen thousand, four hundred eighty-one".