25644450525263 has 8 divisors (see below), whose sum is σ = 26064933642240. Its totient is φ = 25223970062880.

The previous prime is 25644450525259. The next prime is 25644450525269. The reversal of 25644450525263 is 36252505444652.

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 25644450525263 - 2² = 25644450525259 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25644450525269) 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, 31454081 + ... + 32259077.

It is an arithmetic number, because the mean of its divisors is an integer number (3258116705280).

Almost surely, 2^{25644450525263} is an apocalyptic number.

25644450525263 is a deficient number, since it is larger than the sum of its proper divisors (420483116977).

25644450525263 is an equidigital number, since it uses as much as digits as its factorization.

25644450525263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1327297.

The product of its (nonzero) digits is 34560000, while the sum is 53.

The spelling of 25644450525263 in words is "twenty-five trillion, six hundred forty-four billion, four hundred fifty million, five hundred twenty-five thousand, two hundred sixty-three".