25682977 has 4 divisors (see below), whose sum is σ = 25713940. Its totient is φ = 25652016.

The previous prime is 25682963. The next prime is 25682983. The reversal of 25682977 is 77928652.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4669921 + 21013056 = 2161^2 + 4584^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25682977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25682957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14202 + ... + 15907.

It is an arithmetic number, because the mean of its divisors is an integer number (6428485).

Almost surely, 2^25682977 is an apocalyptic number.

It is an amenable number.

25682977 is a deficient number, since it is larger than the sum of its proper divisors (30963).

25682977 is an equidigital number, since it uses as much as digits as its factorization.

25682977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30962.

The product of its digits is 423360, while the sum is 46.

The square root of 25682977 is about 5067.8375072609. The cubic root of 25682977 is about 295.0406034315.

The spelling of 25682977 in words is "twenty-five million, six hundred eighty-two thousand, nine hundred seventy-seven".