25670055578 has 16 divisors (see below), whose sum is σ = 38659620480. Its totient is φ = 12783592800.

The previous prime is 25670055577. The next prime is 25670055629. The reversal of 25670055578 is 87555007652.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (25670055571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 669158 + ... + 706478.

It is an arithmetic number, because the mean of its divisors is an integer number (2416226280).

Almost surely, 2^25670055578 is an apocalyptic number.

25670055578 is a deficient number, since it is larger than the sum of its proper divisors (12989564902).

25670055578 is a wasteful number, since it uses less digits than its factorization.

25670055578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38693.

The product of its (nonzero) digits is 2940000, while the sum is 50.

The spelling of 25670055578 in words is "twenty-five billion, six hundred seventy million, fifty-five thousand, five hundred seventy-eight".