25846406545 has 8 divisors (see below), whose sum is σ = 31452528960. Its totient is φ = 20385897840.

The previous prime is 25846406527. The next prime is 25846406549. The reversal of 25846406545 is 54560464852.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-25846406545 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25846406549) 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, 36403035 + ... + 36403744.

It is an arithmetic number, because the mean of its divisors is an integer number (3931566120).

Almost surely, 2^25846406545 is an apocalyptic number.

It is an amenable number.

25846406545 is a deficient number, since it is larger than the sum of its proper divisors (5606122415).

25846406545 is an equidigital number, since it uses as much as digits as its factorization.

25846406545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72806855.

The product of its (nonzero) digits is 4608000, while the sum is 49.

The spelling of 25846406545 in words is "twenty-five billion, eight hundred forty-six million, four hundred six thousand, five hundred forty-five".