25025899 has 2 divisors, whose sum is σ = 25025900. Its totient is φ = 25025898.

The previous prime is 25025873. The next prime is 25025939. The reversal of 25025899 is 99852052.

It is an a-pointer prime, because the next prime (25025939) can be obtained adding 25025899 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25025899 - 2¹⁵ = 24993131 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25025809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12512949 + 12512950.

It is an arithmetic number, because the mean of its divisors is an integer number (12512950).

Almost surely, 2^25025899 is an apocalyptic number.

25025899 is a deficient number, since it is larger than the sum of its proper divisors (1).

25025899 is an equidigital number, since it uses as much as digits as its factorization.

25025899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64800, while the sum is 40.

The square root of 25025899 is about 5002.5892295890. The cubic root of 25025899 is about 292.5027111542.

The spelling of 25025899 in words is "twenty-five million, twenty-five thousand, eight hundred ninety-nine".