25676778 has 16 divisors (see below), whose sum is σ = 51470496. Its totient is φ = 8539440.

The previous prime is 25676759. The next prime is 25676789. The reversal of 25676778 is 87767652.

It is a super-2 number, since 2×25676778² = 1318593856922568, which contains 22 as substring.

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, 1876 + ... + 7407.

It is an arithmetic number, because the mean of its divisors is an integer number (3216906).

Almost surely, 2^25676778 is an apocalyptic number.

25676778 is an abundant number, since it is smaller than the sum of its proper divisors (25793718).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25676778 is a wasteful number, since it uses less digits than its factorization.

25676778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9749.

The product of its digits is 987840, while the sum is 48.

The square root of 25676778 is about 5067.2258682636. The cubic root of 25676778 is about 295.0168639215.

The spelling of 25676778 in words is "twenty-five million, six hundred seventy-six thousand, seven hundred seventy-eight".