25649119 has 2 divisors, whose sum is σ = 25649120. Its totient is φ = 25649118.

The previous prime is 25649111. The next prime is 25649123. The reversal of 25649119 is 91194652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25649119 - 2³ = 25649111 is a prime.

It is a super-2 number, since 2×25649119² = 1315754610952322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25649111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12824559 + 12824560.

It is an arithmetic number, because the mean of its divisors is an integer number (12824560).

Almost surely, 2^25649119 is an apocalyptic number.

25649119 is a deficient number, since it is larger than the sum of its proper divisors (1).

25649119 is an equidigital number, since it uses as much as digits as its factorization.

25649119 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 37.

The square root of 25649119 is about 5064.4959275332. The cubic root of 25649119 is about 294.9108952374.

The spelling of 25649119 in words is "twenty-five million, six hundred forty-nine thousand, one hundred nineteen".