25066629994 has 16 divisors (see below), whose sum is σ = 44839686528. Its totient is φ = 10275761232.

The previous prime is 25066629961. The next prime is 25066629997. The reversal of 25066629994 is 49992666052.

It is a super-2 number, since 2×25066629994² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25066629997) 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 7 ways as a sum of consecutive naturals, for example, 38923017 + ... + 38923660.

It is an arithmetic number, because the mean of its divisors is an integer number (2802480408).

Almost surely, 2^25066629994 is an apocalyptic number.

25066629994 is a deficient number, since it is larger than the sum of its proper divisors (19773056534).

25066629994 is a wasteful number, since it uses less digits than its factorization.

25066629994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77846709.

The product of its (nonzero) digits is 12597120, while the sum is 58.

The spelling of 25066629994 in words is "twenty-five billion, sixty-six million, six hundred twenty-nine thousand, nine hundred ninety-four".