25298129 has 2 divisors, whose sum is σ = 25298130. Its totient is φ = 25298128.

The previous prime is 25298123. The next prime is 25298131. The reversal of 25298129 is 92189252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25230529 + 67600 = 5023^2 + 260^2 .

It is a cyclic number.

It is not a de Polignac number, because 25298129 - 2⁴ = 25298113 is a prime.

Together with 25298131, it forms a pair of twin primes.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 25298092 and 25298101.

It is not a weakly prime, because it can be changed into another prime (25298123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12649064 + 12649065.

It is an arithmetic number, because the mean of its divisors is an integer number (12649065).

Almost surely, 2^25298129 is an apocalyptic number.

It is an amenable number.

25298129 is a deficient number, since it is larger than the sum of its proper divisors (1).

25298129 is an equidigital number, since it uses as much as digits as its factorization.

25298129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 38.

The square root of 25298129 is about 5029.7245451416. The cubic root of 25298129 is about 293.5594965806.

The spelling of 25298129 in words is "twenty-five million, two hundred ninety-eight thousand, one hundred twenty-nine".