25120664001 has 16 divisors (see below), whose sum is σ = 37222374400. Its totient is φ = 16744150224.

The previous prime is 25120663957. The next prime is 25120664003. The reversal of 25120664001 is 10046602152.

25120664001 is a `hidden beast` number, since 2 + 5 + 12 + 0 + 6 + 640 + 0 + 1 = 666.

It is not a de Polignac number, because 25120664001 - 2⁶ = 25120663937 is a prime.

It is a super-2 number, since 2×25120664001² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25120664003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79200 + ... + 237726.

It is an arithmetic number, because the mean of its divisors is an integer number (2326398400).

Almost surely, 2^25120664001 is an apocalyptic number.

It is an amenable number.

25120664001 is a deficient number, since it is larger than the sum of its proper divisors (12101710399).

25120664001 is a wasteful number, since it uses less digits than its factorization.

25120664001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164405 (or 164399 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The spelling of 25120664001 in words is "twenty-five billion, one hundred twenty million, six hundred sixty-four thousand, one".