25780677 has 32 divisors (see below), whose sum is σ = 39626496. Its totient is φ = 14784000.

The previous prime is 25780673. The next prime is 25780697. The reversal of 25780677 is 77608752.

It is not a de Polignac number, because 25780677 - 2² = 25780673 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25780673) 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 31 ways as a sum of consecutive naturals, for example, 36427 + ... + 37127.

It is an arithmetic number, because the mean of its divisors is an integer number (1238328).

Almost surely, 2^25780677 is an apocalyptic number.

It is an amenable number.

25780677 is a deficient number, since it is larger than the sum of its proper divisors (13845819).

25780677 is a wasteful number, since it uses less digits than its factorization.

25780677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781.

The product of its (nonzero) digits is 164640, while the sum is 42.

The square root of 25780677 is about 5077.4675774445. The cubic root of 25780677 is about 295.4142490125.

The spelling of 25780677 in words is "twenty-five million, seven hundred eighty thousand, six hundred seventy-seven".