25585619 has 2 divisors, whose sum is σ = 25585620. Its totient is φ = 25585618.

The previous prime is 25585607. The next prime is 25585661. The reversal of 25585619 is 91658552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25585619 - 2⁴ = 25585603 is a prime.

It is a super-2 number, since 2×25585619² = 1309247799226322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25585699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12792809 + 12792810.

It is an arithmetic number, because the mean of its divisors is an integer number (12792810).

Almost surely, 2^25585619 is an apocalyptic number.

25585619 is a deficient number, since it is larger than the sum of its proper divisors (1).

25585619 is an equidigital number, since it uses as much as digits as its factorization.

25585619 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108000, while the sum is 41.

The square root of 25585619 is about 5058.2229092835. Note that the first 3 decimals coincide. The cubic root of 25585619 is about 294.6673219946.

The spelling of 25585619 in words is "twenty-five million, five hundred eighty-five thousand, six hundred nineteen".