25616145241 has 8 divisors (see below), whose sum is σ = 27163053000. Its totient is φ = 24073690368.

The previous prime is 25616145229. The next prime is 25616145259. The reversal of 25616145241 is 14254161652.

It can be written as a sum of positive squares in 4 ways, for example, as 20287729225 + 5328416016 = 142435^2 + 72996^2 .

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 25616145241 - 2⁵ = 25616145209 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 25616145241.

It is not an unprimeable number, because it can be changed into a prime (25616145221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1101366 + ... + 1124383.

It is an arithmetic number, because the mean of its divisors is an integer number (3395381625).

Almost surely, 2^25616145241 is an apocalyptic number.

It is an amenable number.

25616145241 is a deficient number, since it is larger than the sum of its proper divisors (1546907759).

25616145241 is a wasteful number, since it uses less digits than its factorization.

25616145241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2226443.

The product of its digits is 57600, while the sum is 37.

The spelling of 25616145241 in words is "twenty-five billion, six hundred sixteen million, one hundred forty-five thousand, two hundred forty-one".