25675111778 has 64 divisors (see below), whose sum is σ = 41607820800. Its totient is φ = 11860316160.

The previous prime is 25675111771. The next prime is 25675111783. The reversal of 25675111778 is 87711157652.

It is a super-2 number, since 2×25675111778² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25675111771) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23533013 + ... + 23534103.

It is an arithmetic number, because the mean of its divisors is an integer number (650122200).

Almost surely, 2^25675111778 is an apocalyptic number.

25675111778 is a deficient number, since it is larger than the sum of its proper divisors (15932709022).

25675111778 is a wasteful number, since it uses less digits than its factorization.

25675111778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1355.

The product of its digits is 823200, while the sum is 50.

The spelling of 25675111778 in words is "twenty-five billion, six hundred seventy-five million, one hundred eleven thousand, seven hundred seventy-eight".