25028606668 has 12 divisors (see below), whose sum is σ = 47169297280. Its totient is φ = 11551664592.

The previous prime is 25028606663. The next prime is 25028606717. The reversal of 25028606668 is 86660682052.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (25028606663) 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 3 ways as a sum of consecutive naturals, for example, 240659628 + ... + 240659731.

Almost surely, 2^25028606668 is an apocalyptic number.

It is an amenable number.

25028606668 is a deficient number, since it is larger than the sum of its proper divisors (22140690612).

25028606668 is a wasteful number, since it uses less digits than its factorization.

25028606668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481319376 (or 481319374 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 49.

The spelling of 25028606668 in words is "twenty-five billion, twenty-eight million, six hundred six thousand, six hundred sixty-eight".