25443532945 has 8 divisors (see below), whose sum is σ = 31585075560. Its totient is φ = 19652935680.

The previous prime is 25443532921. The next prime is 25443532951. The reversal of 25443532945 is 54923534452.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2572112656 + 22871420289 = 50716^2 + 151233^2 .

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

It is not a de Polignac number, because 25443532945 - 2⁵ = 25443532913 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25443532895 and 25443532904.

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, 87736176 + ... + 87736465.

It is an arithmetic number, because the mean of its divisors is an integer number (3948134445).

Almost surely, 2^25443532945 is an apocalyptic number.

It is an amenable number.

25443532945 is a deficient number, since it is larger than the sum of its proper divisors (6141542615).

25443532945 is a wasteful number, since it uses less digits than its factorization.

25443532945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175472675.

The product of its digits is 2592000, while the sum is 46.

The spelling of 25443532945 in words is "twenty-five billion, four hundred forty-three million, five hundred thirty-two thousand, nine hundred forty-five".