25042499 has 2 divisors, whose sum is σ = 25042500. Its totient is φ = 25042498.

The previous prime is 25042489. The next prime is 25042519. The reversal of 25042499 is 99424052.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25042499 - 2⁴ = 25042483 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25042429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12521249 + 12521250.

It is an arithmetic number, because the mean of its divisors is an integer number (12521250).

Almost surely, 2^25042499 is an apocalyptic number.

25042499 is a deficient number, since it is larger than the sum of its proper divisors (1).

25042499 is an equidigital number, since it uses as much as digits as its factorization.

25042499 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 25042499 is about 5004.2480953686. The cubic root of 25042499 is about 292.5673704606.

The spelling of 25042499 in words is "twenty-five million, forty-two thousand, four hundred ninety-nine".