25433449 has 2 divisors, whose sum is σ = 25433450. Its totient is φ = 25433448.

The previous prime is 25433431. The next prime is 25433461. The reversal of 25433449 is 94433452.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25431849 + 1600 = 5043^2 + 40^2 .

It is a cyclic number.

It is not a de Polignac number, because 25433449 - 2⁵ = 25433417 is a prime.

It is not a weakly prime, because it can be changed into another prime (25413449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12716724 + 12716725.

It is an arithmetic number, because the mean of its divisors is an integer number (12716725).

Almost surely, 2^25433449 is an apocalyptic number.

It is an amenable number.

25433449 is a deficient number, since it is larger than the sum of its proper divisors (1).

25433449 is an equidigital number, since it uses as much as digits as its factorization.

25433449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 34.

The square root of 25433449 is about 5043.1586332377. The cubic root of 25433449 is about 294.0819838617.

The spelling of 25433449 in words is "twenty-five million, four hundred thirty-three thousand, four hundred forty-nine".