25912005 has 16 divisors (see below), whose sum is σ = 47382144. Its totient is φ = 11845440.

The previous prime is 25911997. The next prime is 25912009. The reversal of 25912005 is 50021952.

It is not a de Polignac number, because 25912005 - 2³ = 25911997 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25912009) 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, 123286 + ... + 123495.

It is an arithmetic number, because the mean of its divisors is an integer number (2961384).

Almost surely, 2^25912005 is an apocalyptic number.

It is an amenable number.

25912005 is a deficient number, since it is larger than the sum of its proper divisors (21470139).

25912005 is a wasteful number, since it uses less digits than its factorization.

25912005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246796.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 25912005 is about 5090.3835808316. The cubic root of 25912005 is about 295.9150177574.

Adding to 25912005 its reverse (50021952), we get a palindrome (75933957).

The spelling of 25912005 in words is "twenty-five million, nine hundred twelve thousand, five".