25267779 has 6 divisors (see below), whose sum is σ = 36497916. Its totient is φ = 16845180.

The previous prime is 25267757. The next prime is 25267783. The reversal of 25267779 is 97776252.

It is not a de Polignac number, because 25267779 - 2¹¹ = 25265731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25267799) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1403757 + ... + 1403774.

It is an arithmetic number, because the mean of its divisors is an integer number (6082986).

Almost surely, 2^25267779 is an apocalyptic number.

25267779 is a deficient number, since it is larger than the sum of its proper divisors (11230137).

25267779 is a wasteful number, since it uses less digits than its factorization.

25267779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2807537 (or 2807534 counting only the distinct ones).

The product of its digits is 370440, while the sum is 45.

The square root of 25267779 is about 5026.7065758805. The cubic root of 25267779 is about 293.4420558007.

The spelling of 25267779 in words is "twenty-five million, two hundred sixty-seven thousand, seven hundred seventy-nine".