25535158243 has 8 divisors (see below), whose sum is σ = 30718987520. Its totient is φ = 20735316360.

The previous prime is 25535158223. The next prime is 25535158301. The reversal of 25535158243 is 34285153552.

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-25535158243 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25535158243.

It is not an unprimeable number, because it can be changed into a prime (25535158223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95996703 + ... + 95996968.

It is an arithmetic number, because the mean of its divisors is an integer number (3839873440).

Almost surely, 2^25535158243 is an apocalyptic number.

25535158243 is a deficient number, since it is larger than the sum of its proper divisors (5183829277).

25535158243 is a wasteful number, since it uses less digits than its factorization.

25535158243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191993697.

The product of its digits is 720000, while the sum is 43.

The spelling of 25535158243 in words is "twenty-five billion, five hundred thirty-five million, one hundred fifty-eight thousand, two hundred forty-three".