25213919 has 2 divisors, whose sum is σ = 25213920. Its totient is φ = 25213918.

The previous prime is 25213883. The next prime is 25213921. The reversal of 25213919 is 91931252.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25213919 is a prime.

It is a super-2 number, since 2×25213919² = 1271483422677122, which contains 22 as substring.

Together with 25213921, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25213939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12606959 + 12606960.

It is an arithmetic number, because the mean of its divisors is an integer number (12606960).

Almost surely, 2^25213919 is an apocalyptic number.

25213919 is a deficient number, since it is larger than the sum of its proper divisors (1).

25213919 is an equidigital number, since it uses as much as digits as its factorization.

25213919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4860, while the sum is 32.

The square root of 25213919 is about 5021.3463334050. The cubic root of 25213919 is about 293.2334102089.

The spelling of 25213919 in words is "twenty-five million, two hundred thirteen thousand, nine hundred nineteen".