25452505 has 16 divisors (see below), whose sum is σ = 33226704. Its totient is φ = 18604800.

The previous prime is 25452491. The next prime is 25452527. The reversal of 25452505 is 50525452.

It can be written as a sum of positive squares in 8 ways, for example, as 262144 + 25190361 = 512^2 + 5019^2 .

It is not a de Polignac number, because 25452505 - 2⁵ = 25452473 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian 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, 4627 + ... + 8503.

It is an arithmetic number, because the mean of its divisors is an integer number (2076669).

Almost surely, 2^25452505 is an apocalyptic number.

It is an amenable number.

25452505 is a deficient number, since it is larger than the sum of its proper divisors (7774199).

25452505 is a wasteful number, since it uses less digits than its factorization.

25452505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3996.

The product of its (nonzero) digits is 10000, while the sum is 28.

The square root of 25452505 is about 5045.0475716290. The cubic root of 25452505 is about 294.1554124565.

Adding to 25452505 its reverse (50525452), we get a palindrome (75977957).

It can be divided in two parts, 2545 and 2505, that added together give a triangular number (5050 = T₁₀₀).

The spelling of 25452505 in words is "twenty-five million, four hundred fifty-two thousand, five hundred five".