25540829 has 2 divisors, whose sum is σ = 25540830. Its totient is φ = 25540828.

The previous prime is 25540819. The next prime is 25540847. The reversal of 25540829 is 92804552.

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., 25452025 + 88804 = 5045^2 + 298^2 .

It is a cyclic number.

It is not a de Polignac number, because 25540829 - 2¹⁶ = 25475293 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25540819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12770414 + 12770415.

It is an arithmetic number, because the mean of its divisors is an integer number (12770415).

Almost surely, 2^25540829 is an apocalyptic number.

It is an amenable number.

25540829 is a deficient number, since it is larger than the sum of its proper divisors (1).

25540829 is an equidigital number, since it uses as much as digits as its factorization.

25540829 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 25540829 is about 5053.7935256597. The cubic root of 25540829 is about 294.4952740644.

The spelling of 25540829 in words is "twenty-five million, five hundred forty thousand, eight hundred twenty-nine".