25252517 has 4 divisors (see below), whose sum is σ = 25363020. Its totient is φ = 25142016.

The previous prime is 25252457. The next prime is 25252529. The reversal of 25252517 is 71525252.

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 24661156 + 591361 = 4966^2 + 769^2 .

It is a cyclic number.

It is not a de Polignac number, because 25252517 - 2²⁴ = 8475301 is a prime.

It is a super-2 number, since 2×25252517² = 1275379229670578, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25252517.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25251517) 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, 54908 + ... + 55365.

It is an arithmetic number, because the mean of its divisors is an integer number (6340755).

Almost surely, 2^25252517 is an apocalyptic number.

It is an amenable number.

25252517 is a deficient number, since it is larger than the sum of its proper divisors (110503).

25252517 is a wasteful number, since it uses less digits than its factorization.

25252517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110502.

The product of its digits is 7000, while the sum is 29.

The square root of 25252517 is about 5025.1882551801. The cubic root of 25252517 is about 293.3829632221.

Adding to 25252517 its reverse (71525252), we get a palindrome (96777769).

The spelling of 25252517 in words is "twenty-five million, two hundred fifty-two thousand, five hundred seventeen".