25623605 has 16 divisors (see below), whose sum is σ = 35334144. Its totient is φ = 17473920.

The previous prime is 25623589. The next prime is 25623613. The reversal of 25623605 is 50632652.

It is a happy number.

It is not a de Polignac number, because 25623605 - 2⁴ = 25623589 is a prime.

It is a Duffinian number.

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, 4769 + ... + 8601.

It is an arithmetic number, because the mean of its divisors is an integer number (2208384).

Almost surely, 2^25623605 is an apocalyptic number.

It is an amenable number.

25623605 is a deficient number, since it is larger than the sum of its proper divisors (9710539).

25623605 is a wasteful number, since it uses less digits than its factorization.

25623605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4036.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 25623605 is about 5061.9763926751. The cubic root of 25623605 is about 294.8130770256.

The spelling of 25623605 in words is "twenty-five million, six hundred twenty-three thousand, six hundred five".