25775913 has 16 divisors (see below), whose sum is σ = 36590400. Its totient is φ = 16093440.

The previous prime is 25775903. The next prime is 25775917. The reversal of 25775913 is 31957752.

It is not a de Polignac number, because 25775913 - 2⁸ = 25775657 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25775917) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2533 + ... + 7613.

It is an arithmetic number, because the mean of its divisors is an integer number (2286900).

Almost surely, 2^25775913 is an apocalyptic number.

It is an amenable number.

25775913 is a deficient number, since it is larger than the sum of its proper divisors (10814487).

25775913 is a wasteful number, since it uses less digits than its factorization.

25775913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5192.

The product of its digits is 66150, while the sum is 39.

The square root of 25775913 is about 5076.9984242661. The cubic root of 25775913 is about 295.3960514017.

The spelling of 25775913 in words is "twenty-five million, seven hundred seventy-five thousand, nine hundred thirteen".