25777535042401 has 4 divisors (see below), whose sum is σ = 25777669028272. Its totient is φ = 25777401056532.

The previous prime is 25777535042351. The next prime is 25777535042417. The reversal of 25777535042401 is 10424053577752.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25777535042401 - 2²¹ = 25777532945249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25777535042201) 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 3 ways as a sum of consecutive naturals, for example, 66703935 + ... + 67089268.

It is an arithmetic number, because the mean of its divisors is an integer number (6444417257068).

Almost surely, 2^{25777535042401} is an apocalyptic number.

It is an amenable number.

25777535042401 is a deficient number, since it is larger than the sum of its proper divisors (133985871).

25777535042401 is a wasteful number, since it uses less digits than its factorization.

25777535042401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133985870.

The product of its (nonzero) digits is 8232000, while the sum is 52.

The spelling of 25777535042401 in words is "twenty-five trillion, seven hundred seventy-seven billion, five hundred thirty-five million, forty-two thousand, four hundred one".