25797961043895 has 32 divisors (see below), whose sum is σ = 41896652428800. Its totient is φ = 13552311991680.

The previous prime is 25797961043867. The next prime is 25797961043951. The reversal of 25797961043895 is 59834016979752.

It is not a de Polignac number, because 25797961043895 - 2⁸ = 25797961043639 is a prime.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 9831510 + ... + 12175980.

It is an arithmetic number, because the mean of its divisors is an integer number (1309270388400).

It is a 1-persistent number, because it is pandigital, but 2⋅25797961043895 = 51595922087790 is not.

Almost surely, 2^{25797961043895} is an apocalyptic number.

25797961043895 is a deficient number, since it is larger than the sum of its proper divisors (16098691384905).

25797961043895 is a wasteful number, since it uses less digits than its factorization.

25797961043895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2355495.

The product of its (nonzero) digits is 1028764800, while the sum is 75.

The spelling of 25797961043895 in words is "twenty-five trillion, seven hundred ninety-seven billion, nine hundred sixty-one million, forty-three thousand, eight hundred ninety-five".