25252619 has 4 divisors (see below), whose sum is σ = 28860144. Its totient is φ = 21645096.

The previous prime is 25252609. The next prime is 25252639. The reversal of 25252619 is 91625252.

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

It is a cyclic number.

It is not a de Polignac number, because 25252619 - 2⁴ = 25252603 is a prime.

It is a super-2 number, since 2×25252619² = 1275389532718322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25252609) 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, 1803752 + ... + 1803765.

It is an arithmetic number, because the mean of its divisors is an integer number (7215036).

Almost surely, 2^25252619 is an apocalyptic number.

25252619 is a deficient number, since it is larger than the sum of its proper divisors (3607525).

25252619 is an equidigital number, since it uses as much as digits as its factorization.

25252619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3607524.

The product of its digits is 10800, while the sum is 32.

The square root of 25252619 is about 5025.1984040434. The cubic root of 25252619 is about 293.3833582325.

The spelling of 25252619 in words is "twenty-five million, two hundred fifty-two thousand, six hundred nineteen".