25352605 has 4 divisors (see below), whose sum is σ = 30423132. Its totient is φ = 20282080.

The previous prime is 25352597. The next prime is 25352611. The reversal of 25352605 is 50625352.

25352605 = T₃₁₈₂ + T₃₁₈₃ + ... + T₃₁₈₆.

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 9647236 + 15705369 = 3106^2 + 3963^2 .

It is not a de Polignac number, because 25352605 - 2³ = 25352597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2535256 + ... + 2535265.

It is an arithmetic number, because the mean of its divisors is an integer number (7605783).

Almost surely, 2^25352605 is an apocalyptic number.

It is an amenable number.

25352605 is a deficient number, since it is larger than the sum of its proper divisors (5070527).

25352605 is an equidigital number, since it uses as much as digits as its factorization.

25352605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5070526.

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 25352605 is about 5035.1370388501. The cubic root of 25352605 is about 293.7700586876.

Adding to 25352605 its reverse (50625352), we get a palindrome (75977957).

The spelling of 25352605 in words is "twenty-five million, three hundred fifty-two thousand, six hundred five".