25440419 has 2 divisors, whose sum is σ = 25440420. Its totient is φ = 25440418.

The previous prime is 25440407. The next prime is 25440431. The reversal of 25440419 is 91404452.

It is a balanced prime because it is at equal distance from previous prime (25440407) and next prime (25440431).

It is a cyclic number.

It is not a de Polignac number, because 25440419 - 2⁴ = 25440403 is a prime.

It is a super-2 number, since 2×25440419² = 1294429837791122, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 25440391 and 25440400.

It is not a weakly prime, because it can be changed into another prime (25440439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12720209 + 12720210.

It is an arithmetic number, because the mean of its divisors is an integer number (12720210).

Almost surely, 2^25440419 is an apocalyptic number.

25440419 is a deficient number, since it is larger than the sum of its proper divisors (1).

25440419 is an equidigital number, since it uses as much as digits as its factorization.

25440419 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 25440419 is about 5043.8496210732. The cubic root of 25440419 is about 294.1088456558.

The spelling of 25440419 in words is "twenty-five million, four hundred forty thousand, four hundred nineteen".