25040005 has 16 divisors (see below), whose sum is σ = 31795200. Its totient is φ = 18878400.

The previous prime is 25039999. The next prime is 25040017. The reversal of 25040005 is 50004052.

It is a happy number.

It is not a de Polignac number, because 25040005 - 2¹⁵ = 25007237 is a prime.

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, 21180 + ... + 22330.

It is an arithmetic number, because the mean of its divisors is an integer number (1987200).

Almost surely, 2^25040005 is an apocalyptic number.

It is an amenable number.

25040005 is a deficient number, since it is larger than the sum of its proper divisors (6755195).

25040005 is a wasteful number, since it uses less digits than its factorization.

25040005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1404.

The product of its (nonzero) digits is 200, while the sum is 16.

The square root of 25040005 is about 5003.9989008792. The cubic root of 25040005 is about 292.5576578085.

Adding to 25040005 its reverse (50004052), we get a palindrome (75044057).

The spelling of 25040005 in words is "twenty-five million, forty thousand, five".