25394640846941 has 4 divisors (see below), whose sum is σ = 25396700607900. Its totient is φ = 25392581085984.

The previous prime is 25394640846857. The next prime is 25394640846947. The reversal of 25394640846941 is 14964804649352.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2462322734041 + 22932318112900 = 1569179^2 + 4788770^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25394640846941 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 (25394640846947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1029861986 + ... + 1029886643.

It is an arithmetic number, because the mean of its divisors is an integer number (6349175151975).

Almost surely, 2^{25394640846941} is an apocalyptic number.

It is an amenable number.

25394640846941 is a deficient number, since it is larger than the sum of its proper divisors (2059760959).

25394640846941 is a wasteful number, since it uses less digits than its factorization.

25394640846941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2059760958.

The product of its (nonzero) digits is 179159040, while the sum is 65.

The spelling of 25394640846941 in words is "twenty-five trillion, three hundred ninety-four billion, six hundred forty million, eight hundred forty-six thousand, nine hundred forty-one".