25320025066 has 64 divisors (see below), whose sum is σ = 44677785600. Its totient is φ = 10538289216.

The previous prime is 25320024991. The next prime is 25320025079. The reversal of 25320025066 is 66052002352.

It is a super-2 number, since 2×25320025066² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50337771 + ... + 50338273.

It is an arithmetic number, because the mean of its divisors is an integer number (698090400).

Almost surely, 2^25320025066 is an apocalyptic number.

25320025066 is a deficient number, since it is larger than the sum of its proper divisors (19357760534).

25320025066 is a wasteful number, since it uses less digits than its factorization.

25320025066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1123.

The product of its (nonzero) digits is 21600, while the sum is 31.

The spelling of 25320025066 in words is "twenty-five billion, three hundred twenty million, twenty-five thousand, sixty-six".