25019 has 4 divisors (see below), whose sum is σ = 25344. Its totient is φ = 24696.

The previous prime is 25013. The next prime is 25031. The reversal of 25019 is 91052.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 25019 - 2⁸ = 24763 is a prime.

It is a super-2 number, since 2×25019² = 1251900722, which contains 22 as substring.

It is a Duffinian number.

25019 is an undulating number in base 14.

It is a plaindrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 24988 and 25006.

It is not an unprimeable number, because it can be changed into a prime (25013) 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, 29 + ... + 225.

It is an arithmetic number, because the mean of its divisors is an integer number (6336).

2²⁵⁰¹⁹ is an apocalyptic number.

25019 is a deficient number, since it is larger than the sum of its proper divisors (325).

25019 is a wasteful number, since it uses less digits than its factorization.

25019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 25019 is about 158.1739548725. The cubic root of 25019 is about 29.2475830180.

The spelling of 25019 in words is "twenty-five thousand, nineteen".