25465019 has 2 divisors, whose sum is σ = 25465020. Its totient is φ = 25465018.

The previous prime is 25465009. The next prime is 25465021. The reversal of 25465019 is 91056452.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25465019 - 2⁸ = 25464763 is a prime.

It is a super-2 number, since 2×25465019² = 1296934385340722, which contains 22 as substring.

Together with 25465021, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25465009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12732509 + 12732510.

It is an arithmetic number, because the mean of its divisors is an integer number (12732510).

Almost surely, 2^25465019 is an apocalyptic number.

25465019 is a deficient number, since it is larger than the sum of its proper divisors (1).

25465019 is an equidigital number, since it uses as much as digits as its factorization.

25465019 is an odious number, because the sum of its binary digits is odd.

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

The square root of 25465019 is about 5046.2876453884. The cubic root of 25465019 is about 294.2036127904.

The spelling of 25465019 in words is "twenty-five million, four hundred sixty-five thousand, nineteen".