25583580778 has 16 divisors (see below), whose sum is σ = 44065427904. Its totient is φ = 10912426560.

The previous prime is 25583580751. The next prime is 25583580787. The reversal of 25583580778 is 87708538552.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4327375 + ... + 4333282.

It is an arithmetic number, because the mean of its divisors is an integer number (2754089244).

Almost surely, 2^25583580778 is an apocalyptic number.

25583580778 is a deficient number, since it is larger than the sum of its proper divisors (18481847126).

25583580778 is a wasteful number, since it uses less digits than its factorization.

25583580778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8660877.

The product of its (nonzero) digits is 18816000, while the sum is 58.

The spelling of 25583580778 in words is "twenty-five billion, five hundred eighty-three million, five hundred eighty thousand, seven hundred seventy-eight".