25361005 has 4 divisors (see below), whose sum is σ = 30433212. Its totient is φ = 20288800.

The previous prime is 25360997. The next prime is 25361009. The reversal of 25361005 is 50016352.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16752649 + 8608356 = 4093^2 + 2934^2 .

It is not a de Polignac number, because 25361005 - 2³ = 25360997 is a prime.

It is a super-2 number, since 2×25361005² = 1286361149220050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25361009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2536096 + ... + 2536105.

It is an arithmetic number, because the mean of its divisors is an integer number (7608303).

Almost surely, 2^25361005 is an apocalyptic number.

It is an amenable number.

25361005 is a deficient number, since it is larger than the sum of its proper divisors (5072207).

25361005 is an equidigital number, since it uses as much as digits as its factorization.

25361005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5072206.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 25361005 is about 5035.9711079394. The cubic root of 25361005 is about 293.8024997459.

Adding to 25361005 its reverse (50016352), we get a palindrome (75377357).

The spelling of 25361005 in words is "twenty-five million, three hundred sixty-one thousand, five".