25090019 has 2 divisors, whose sum is σ = 25090020. Its totient is φ = 25090018.

The previous prime is 25090007. The next prime is 25090069. The reversal of 25090019 is 91009052.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25090019 - 2¹² = 25085923 is a prime.

It is a super-2 number, since 2×25090019² = 1259018106840722, which contains 22 as substring.

It is a Chen prime.

It is equal to p_1571237 and since 25090019 and 1571237 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25090019.

It is not a weakly prime, because it can be changed into another prime (25090069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12545009 + 12545010.

It is an arithmetic number, because the mean of its divisors is an integer number (12545010).

Almost surely, 2^25090019 is an apocalyptic number.

25090019 is a deficient number, since it is larger than the sum of its proper divisors (1).

25090019 is an equidigital number, since it uses as much as digits as its factorization.

25090019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 810, while the sum is 26.

The square root of 25090019 is about 5008.9938111361. The cubic root of 25090019 is about 292.7523096293.

The spelling of 25090019 in words is "twenty-five million, ninety thousand, nineteen".