25778082 has 24 divisors (see below), whose sum is σ = 56670768. Its totient is φ = 7811320.

The previous prime is 25778063. The next prime is 25778107. The reversal of 25778082 is 28087752.

It is a self number, because there is not a number n which added to its sum of digits gives 25778082.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17028 + ... + 18479.

It is an arithmetic number, because the mean of its divisors is an integer number (2361282).

Almost surely, 2^25778082 is an apocalyptic number.

25778082 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

25778082 is an abundant number, since it is smaller than the sum of its proper divisors (30892686).

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

25778082 is a wasteful number, since it uses less digits than its factorization.

25778082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35534 (or 35523 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 39.

The square root of 25778082 is about 5077.2120302386. The cubic root of 25778082 is about 295.4043368639.

The spelling of 25778082 in words is "twenty-five million, seven hundred seventy-eight thousand, eighty-two".