25144019 has 2 divisors, whose sum is σ = 25144020. Its totient is φ = 25144018.

The previous prime is 25143931. The next prime is 25144033. The reversal of 25144019 is 91044152.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25144019 - 2⁸ = 25143763 is a prime.

It is a super-2 number, since 2×25144019² = 1264443382944722, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (25144079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12572009 + 12572010.

It is an arithmetic number, because the mean of its divisors is an integer number (12572010).

Almost surely, 2^25144019 is an apocalyptic number.

25144019 is a deficient number, since it is larger than the sum of its proper divisors (1).

25144019 is an equidigital number, since it uses as much as digits as its factorization.

25144019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 25144019 is about 5014.3812180567. The cubic root of 25144019 is about 292.9621845453.

The spelling of 25144019 in words is "twenty-five million, one hundred forty-four thousand, nineteen".