25528829 has 2 divisors, whose sum is σ = 25528830. Its totient is φ = 25528828.

The previous prime is 25528819. The next prime is 25528871. The reversal of 25528829 is 92882552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18292729 + 7236100 = 4277^2 + 2690^2 .

It is a cyclic number.

It is not a de Polignac number, because 25528829 - 2⁴ = 25528813 is a prime.

It is a super-2 number, since 2×25528829² = 1303442220222482, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25528819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12764414 + 12764415.

It is an arithmetic number, because the mean of its divisors is an integer number (12764415).

Almost surely, 2^25528829 is an apocalyptic number.

It is an amenable number.

25528829 is a deficient number, since it is larger than the sum of its proper divisors (1).

25528829 is an equidigital number, since it uses as much as digits as its factorization.

25528829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 115200, while the sum is 41.

The square root of 25528829 is about 5052.6061592014. The cubic root of 25528829 is about 294.4491453490.

The spelling of 25528829 in words is "twenty-five million, five hundred twenty-eight thousand, eight hundred twenty-nine".