25115429 has 2 divisors, whose sum is σ = 25115430. Its totient is φ = 25115428.

The previous prime is 25115423. The next prime is 25115459. The reversal of 25115429 is 92451152.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14455204 + 10660225 = 3802^2 + 3265^2 .

It is a cyclic number.

It is not a de Polignac number, because 25115429 - 2⁸ = 25115173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25115423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12557714 + 12557715.

It is an arithmetic number, because the mean of its divisors is an integer number (12557715).

Almost surely, 2^25115429 is an apocalyptic number.

It is an amenable number.

25115429 is a deficient number, since it is larger than the sum of its proper divisors (1).

25115429 is an equidigital number, since it uses as much as digits as its factorization.

25115429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3600, while the sum is 29.

The square root of 25115429 is about 5011.5296068167. The cubic root of 25115429 is about 292.8511049094.

The spelling of 25115429 in words is "twenty-five million, one hundred fifteen thousand, four hundred twenty-nine".