25780895 has 16 divisors (see below), whose sum is σ = 35581440. Its totient is φ = 17565984.

The previous prime is 25780889. The next prime is 25780919. The reversal of 25780895 is 59808752.

It is a cyclic number.

It is not a de Polignac number, because 25780895 - 2⁶ = 25780831 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3446 + ... + 7964.

It is an arithmetic number, because the mean of its divisors is an integer number (2223840).

Almost surely, 2^25780895 is an apocalyptic number.

25780895 is a deficient number, since it is larger than the sum of its proper divisors (9800545).

25780895 is a wasteful number, since it uses less digits than its factorization.

25780895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4694.

The product of its (nonzero) digits is 201600, while the sum is 44.

The square root of 25780895 is about 5077.4890447937. The cubic root of 25780895 is about 295.4150816790.

The spelling of 25780895 in words is "twenty-five million, seven hundred eighty thousand, eight hundred ninety-five".