25725499 has 2 divisors, whose sum is σ = 25725500. Its totient is φ = 25725498.

The previous prime is 25725493. The next prime is 25725509. The reversal of 25725499 is 99452752.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25725499 - 2¹⁷ = 25594427 is a prime.

It is not a weakly prime, because it can be changed into another prime (25725493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12862749 + 12862750.

It is an arithmetic number, because the mean of its divisors is an integer number (12862750).

Almost surely, 2^25725499 is an apocalyptic number.

25725499 is a deficient number, since it is larger than the sum of its proper divisors (1).

25725499 is an equidigital number, since it uses as much as digits as its factorization.

25725499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 226800, while the sum is 43.

The square root of 25725499 is about 5072.0310527441. The cubic root of 25725499 is about 295.2033415639.

The spelling of 25725499 in words is "twenty-five million, seven hundred twenty-five thousand, four hundred ninety-nine".