25996605 has 16 divisors (see below), whose sum is σ = 41665344. Its totient is φ = 13841280.

The previous prime is 25996591. The next prime is 25996637. The reversal of 25996605 is 50669952.

It is not a de Polignac number, because 25996605 - 2⁴ = 25996589 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11097 + ... + 13233.

It is an arithmetic number, because the mean of its divisors is an integer number (2604084).

Almost surely, 2^25996605 is an apocalyptic number.

It is an amenable number.

25996605 is a deficient number, since it is larger than the sum of its proper divisors (15668739).

25996605 is a wasteful number, since it uses less digits than its factorization.

25996605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2956.

The product of its (nonzero) digits is 145800, while the sum is 42.

The square root of 25996605 is about 5098.6865955852. The cubic root of 25996605 is about 296.2367118254.

The spelling of 25996605 in words is "twenty-five million, nine hundred ninety-six thousand, six hundred five".