25122899 has 2 divisors, whose sum is σ = 25122900. Its totient is φ = 25122898.

The previous prime is 25122871. The next prime is 25122907. The reversal of 25122899 is 99822152.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25122899 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 (25122809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12561449 + 12561450.

It is an arithmetic number, because the mean of its divisors is an integer number (12561450).

Almost surely, 2^25122899 is an apocalyptic number.

25122899 is a deficient number, since it is larger than the sum of its proper divisors (1).

25122899 is an equidigital number, since it uses as much as digits as its factorization.

25122899 is an odious number, because the sum of its binary digits is odd.

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

The square root of 25122899 is about 5012.2748328479. The cubic root of 25122899 is about 292.8801359472.

The spelling of 25122899 in words is "twenty-five million, one hundred twenty-two thousand, eight hundred ninety-nine".