25194116791261 has 8 divisors (see below), whose sum is σ = 27659551499424. Its totient is φ = 22757858825520.

The previous prime is 25194116791247. The next prime is 25194116791289. The reversal of 25194116791261 is 16219761149152.

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 25194116791261 - 2¹⁹ = 25194116266973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25194116791211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7294183795 + ... + 7294187248.

It is an arithmetic number, because the mean of its divisors is an integer number (3457443937428).

Almost surely, 2^{25194116791261} is an apocalyptic number.

It is an amenable number.

25194116791261 is a deficient number, since it is larger than the sum of its proper divisors (2465434708163).

25194116791261 is a wasteful number, since it uses less digits than its factorization.

25194116791261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14588371211.

The product of its digits is 1632960, while the sum is 55.

The spelling of 25194116791261 in words is "twenty-five trillion, one hundred ninety-four billion, one hundred sixteen million, seven hundred ninety-one thousand, two hundred sixty-one".