25777994 has 16 divisors (see below), whose sum is σ = 42261696. Its totient is φ = 11695200.

The previous prime is 25777993. The next prime is 25778021. The reversal of 25777994 is 49977752.

It is not an unprimeable number, because it can be changed into a prime (25777993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18854 + ... + 20174.

It is an arithmetic number, because the mean of its divisors is an integer number (2641356).

Almost surely, 2^25777994 is an apocalyptic number.

25777994 is a deficient number, since it is larger than the sum of its proper divisors (16483702).

25777994 is a wasteful number, since it uses less digits than its factorization.

25777994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2221.

The product of its digits is 1111320, while the sum is 50.

The square root of 25777994 is about 5077.2033640578. The cubic root of 25777994 is about 295.4040007178.

The spelling of 25777994 in words is "twenty-five million, seven hundred seventy-seven thousand, nine hundred ninety-four".