25678620506 has 64 divisors (see below), whose sum is σ = 48487680000. Its totient is φ = 9908205120.

The previous prime is 25678620493. The next prime is 25678620521. The reversal of 25678620506 is 60502687652.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 7016105 + ... + 7019763.

It is an arithmetic number, because the mean of its divisors is an integer number (757620000).

Almost surely, 2^25678620506 is an apocalyptic number.

25678620506 is a deficient number, since it is larger than the sum of its proper divisors (22809059494).

25678620506 is a wasteful number, since it uses less digits than its factorization.

25678620506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4107.

The product of its (nonzero) digits is 1209600, while the sum is 47.

The spelling of 25678620506 in words is "twenty-five billion, six hundred seventy-eight million, six hundred twenty thousand, five hundred six".