25725019 has 2 divisors, whose sum is σ = 25725020. Its totient is φ = 25725018.

The previous prime is 25725013. The next prime is 25725043. The reversal of 25725019 is 91052752.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25725019 - 2⁷ = 25724891 is a prime.

It is a super-2 number, since 2×25725019² = 1323553205100722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25725013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12862509 + 12862510.

It is an arithmetic number, because the mean of its divisors is an integer number (12862510).

Almost surely, 2^25725019 is an apocalyptic number.

25725019 is a deficient number, since it is larger than the sum of its proper divisors (1).

25725019 is an equidigital number, since it uses as much as digits as its factorization.

25725019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 25725019 is about 5071.9837342010. The cubic root of 25725019 is about 295.2015055323.

The spelling of 25725019 in words is "twenty-five million, seven hundred twenty-five thousand, nineteen".