25560995890 has 16 divisors (see below), whose sum is σ = 46592196480. Its totient is φ = 10094975280.

The previous prime is 25560995869. The next prime is 25560995893. The reversal of 25560995890 is 9859906552.

It is not an unprimeable number, because it can be changed into a prime (25560995893) 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, 16177056 + ... + 16178635.

It is an arithmetic number, because the mean of its divisors is an integer number (2912012280).

Almost surely, 2^25560995890 is an apocalyptic number.

25560995890 is a deficient number, since it is larger than the sum of its proper divisors (21031200590).

25560995890 is a wasteful number, since it uses less digits than its factorization.

25560995890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32355777.

The product of its (nonzero) digits is 8748000, while the sum is 58.

The spelling of 25560995890 in words is "twenty-five billion, five hundred sixty million, nine hundred ninety-five thousand, eight hundred ninety".