25152819 has 4 divisors (see below), whose sum is σ = 33537096. Its totient is φ = 16768544.

The previous prime is 25152797. The next prime is 25152857. The reversal of 25152819 is 91825152.

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 25152819 - 2⁷ = 25152691 is a prime.

It is a super-2 number, since 2×25152819² = 1265328607293522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25152819.

It is not an unprimeable number, because it can be changed into a prime (25152319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4192134 + ... + 4192139.

It is an arithmetic number, because the mean of its divisors is an integer number (8384274).

Almost surely, 2^25152819 is an apocalyptic number.

25152819 is a deficient number, since it is larger than the sum of its proper divisors (8384277).

25152819 is an equidigital number, since it uses as much as digits as its factorization.

25152819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8384276.

The product of its digits is 7200, while the sum is 33.

The square root of 25152819 is about 5015.2586174593. The cubic root of 25152819 is about 292.9963579010.

The spelling of 25152819 in words is "twenty-five million, one hundred fifty-two thousand, eight hundred nineteen".