25436005 has 16 divisors (see below), whose sum is σ = 35697024. Its totient is φ = 17035200.

The previous prime is 25435967. The next prime is 25436009. The reversal of 25436005 is 50063452.

It is not a de Polignac number, because 25436005 - 2¹⁵ = 25403237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25436009) 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, 6946 + ... + 9955.

It is an arithmetic number, because the mean of its divisors is an integer number (2231064).

Almost surely, 2^25436005 is an apocalyptic number.

It is an amenable number.

25436005 is a deficient number, since it is larger than the sum of its proper divisors (10261019).

25436005 is a wasteful number, since it uses less digits than its factorization.

25436005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16956.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 25436005 is about 5043.4120394828. The cubic root of 25436005 is about 294.0918350407.

Adding to 25436005 its reverse (50063452), we get a palindrome (75499457).

The spelling of 25436005 in words is "twenty-five million, four hundred thirty-six thousand, five".