25235491 has 2 divisors, whose sum is σ = 25235492. Its totient is φ = 25235490.

The previous prime is 25235489. The next prime is 25235501. The reversal of 25235491 is 19453252.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25235491 - 2¹ = 25235489 is a prime.

It is a super-2 number, since 2×25235491² = 1273660012022162, which contains 22 as substring.

Together with 25235489, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (25235291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12617745 + 12617746.

It is an arithmetic number, because the mean of its divisors is an integer number (12617746).

Almost surely, 2^25235491 is an apocalyptic number.

25235491 is a deficient number, since it is larger than the sum of its proper divisors (1).

25235491 is an equidigital number, since it uses as much as digits as its factorization.

25235491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10800, while the sum is 31.

The square root of 25235491 is about 5023.4939036491. The cubic root of 25235491 is about 293.3170125504.

The spelling of 25235491 in words is "twenty-five million, two hundred thirty-five thousand, four hundred ninety-one".