25435453 has 2 divisors, whose sum is σ = 25435454. Its totient is φ = 25435452.

The previous prime is 25435441. The next prime is 25435481. The reversal of 25435453 is 35453452.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25421764 + 13689 = 5042^2 + 117^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25435453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25435483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12717726 + 12717727.

It is an arithmetic number, because the mean of its divisors is an integer number (12717727).

Almost surely, 2^25435453 is an apocalyptic number.

It is an amenable number.

25435453 is a deficient number, since it is larger than the sum of its proper divisors (1).

25435453 is an equidigital number, since it uses as much as digits as its factorization.

25435453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36000, while the sum is 31.

The square root of 25435453 is about 5043.3573143294. The cubic root of 25435453 is about 294.0897076119.

The spelling of 25435453 in words is "twenty-five million, four hundred thirty-five thousand, four hundred fifty-three".