25980777 has 48 divisors (see below), whose sum is σ = 43001280. Its totient is φ = 15447168.

The previous prime is 25980769. The next prime is 25980793. The reversal of 25980777 is 77708952.

It is not a de Polignac number, because 25980777 - 2³ = 25980769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25980727) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 242758 + ... + 242864.

It is an arithmetic number, because the mean of its divisors is an integer number (895860).

Almost surely, 2^25980777 is an apocalyptic number.

25980777 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

25980777 is a deficient number, since it is larger than the sum of its proper divisors (17020503).

25980777 is a wasteful number, since it uses less digits than its factorization.

25980777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179 (or 150 counting only the distinct ones).

The product of its (nonzero) digits is 246960, while the sum is 45.

The square root of 25980777 is about 5097.1341948197. The cubic root of 25980777 is about 296.1765785042.

The spelling of 25980777 in words is "twenty-five million, nine hundred eighty thousand, seven hundred seventy-seven".