25543254545 has 8 divisors (see below), whose sum is σ = 32454958824. Its totient is φ = 19232568064.

The previous prime is 25543254533. The next prime is 25543254551. The reversal of 25543254545 is 54545234552.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 287370304 + 25255884241 = 16952^2 + 158921^2 .

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 25543254545 - 2²⁴ = 25526477329 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25543254496 and 25543254505.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150254354 + ... + 150254523.

It is an arithmetic number, because the mean of its divisors is an integer number (4056869853).

Almost surely, 2^25543254545 is an apocalyptic number.

It is an amenable number.

25543254545 is a deficient number, since it is larger than the sum of its proper divisors (6911704279).

25543254545 is a wasteful number, since it uses less digits than its factorization.

25543254545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300508899.

The product of its digits is 2400000, while the sum is 44.

The spelling of 25543254545 in words is "twenty-five billion, five hundred forty-three million, two hundred fifty-four thousand, five hundred forty-five".