25621415360001 has 12 divisors (see below), whose sum is σ = 37170321170580. Its totient is φ = 17006354298720.

The previous prime is 25621415359999. The next prime is 25621415360027. The reversal of 25621415360001 is 10006351412652.

25621415360001 is a `hidden beast` number, since 2 + 5 + 6 + 2 + 1 + 41 + 5 + 3 + 600 + 0 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 23692994327025 + 1928421032976 = 4867545^2 + 1388676^2 .

It is not a de Polignac number, because 25621415360001 - 2¹ = 25621415359999 is a prime.

It is a super-3 number, since 3×25621415360001³ (a number of 41 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (25621415360071) 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 11 ways as a sum of consecutive naturals, for example, 6215770710 + ... + 6215774831.

It is an arithmetic number, because the mean of its divisors is an integer number (3097526764215).

Almost surely, 2^{25621415360001} is an apocalyptic number.

It is an amenable number.

25621415360001 is a deficient number, since it is larger than the sum of its proper divisors (11548905810579).

25621415360001 is a wasteful number, since it uses less digits than its factorization.

25621415360001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12431545776 (or 12431545773 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

Adding to 25621415360001 its reverse (10006351412652), we get a palindrome (35627766772653).

The spelling of 25621415360001 in words is "twenty-five trillion, six hundred twenty-one billion, four hundred fifteen million, three hundred sixty thousand, one".