25545516745 has 8 divisors (see below), whose sum is σ = 35033851584. Its totient is φ = 17516925744.

The previous prime is 25545516707. The next prime is 25545516749. The reversal of 25545516745 is 54761554552.

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 25545516745 - 2¹⁹ = 25544992457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25545516749) 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, 364935919 + ... + 364935988.

It is an arithmetic number, because the mean of its divisors is an integer number (4379231448).

Almost surely, 2^25545516745 is an apocalyptic number.

It is an amenable number.

25545516745 is a deficient number, since it is larger than the sum of its proper divisors (9488334839).

25545516745 is an equidigital number, since it uses as much as digits as its factorization.

25545516745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729871919.

The product of its digits is 4200000, while the sum is 49.

The spelling of 25545516745 in words is "twenty-five billion, five hundred forty-five million, five hundred sixteen thousand, seven hundred forty-five".