25430849 has 2 divisors, whose sum is σ = 25430850. Its totient is φ = 25430848.

The previous prime is 25430837. The next prime is 25430857. The reversal of 25430849 is 94803452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22848400 + 2582449 = 4780^2 + 1607^2 .

It is a cyclic number.

It is not a de Polignac number, because 25430849 - 2⁴ = 25430833 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25430809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12715424 + 12715425.

It is an arithmetic number, because the mean of its divisors is an integer number (12715425).

Almost surely, 2^25430849 is an apocalyptic number.

It is an amenable number.

25430849 is a deficient number, since it is larger than the sum of its proper divisors (1).

25430849 is an equidigital number, since it uses as much as digits as its factorization.

25430849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 25430849 is about 5042.9008516924. The cubic root of 25430849 is about 294.0719624235.

The spelling of 25430849 in words is "twenty-five million, four hundred thirty thousand, eight hundred forty-nine".