25106005 has 4 divisors (see below), whose sum is σ = 30127212. Its totient is φ = 20084800.

The previous prime is 25105999. The next prime is 25106051. The reversal of 25106005 is 50060152.

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 14569489 + 10536516 = 3817^2 + 3246^2 .

It is not a de Polignac number, because 25106005 - 2¹¹ = 25103957 is a prime.

It is a super-2 number, since 2×25106005² = 1260622974120050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2510596 + ... + 2510605.

It is an arithmetic number, because the mean of its divisors is an integer number (7531803).

Almost surely, 2^25106005 is an apocalyptic number.

It is an amenable number.

25106005 is a deficient number, since it is larger than the sum of its proper divisors (5021207).

25106005 is an equidigital number, since it uses as much as digits as its factorization.

25106005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5021206.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 25106005 is about 5010.5892867007. The cubic root of 25106005 is about 292.8144717297.

Adding to 25106005 its reverse (50060152), we get a palindrome (75166157).

It can be divided in two parts, 2510 and 6005, that added together give a triangular number (8515 = T₁₃₀).

The spelling of 25106005 in words is "twenty-five million, one hundred six thousand, five".