25430519 has 2 divisors, whose sum is σ = 25430520. Its totient is φ = 25430518.

The previous prime is 25430497. The next prime is 25430543. The reversal of 25430519 is 91503452.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25430519 is a prime.

It is a super-2 number, since 2×25430519² = 1293422593218722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25430491 and 25430500.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25430549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12715259 + 12715260.

It is an arithmetic number, because the mean of its divisors is an integer number (12715260).

Almost surely, 2^25430519 is an apocalyptic number.

25430519 is a deficient number, since it is larger than the sum of its proper divisors (1).

25430519 is an equidigital number, since it uses as much as digits as its factorization.

25430519 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 25430519 is about 5042.8681323231. The cubic root of 25430519 is about 294.0706904229.

The spelling of 25430519 in words is "twenty-five million, four hundred thirty thousand, five hundred nineteen".