25425953 has 18 divisors (see below), whose sum is σ = 30681846. Its totient is φ = 21008064.

The previous prime is 25425949. The next prime is 25425977. The reversal of 25425953 is 35952452.

It can be written as a sum of positive squares in 3 ways, for example, as 305809 + 25120144 = 553^2 + 5012^2 .

It is not a de Polignac number, because 25425953 - 2² = 25425949 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25425853) 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 in 17 ways as a sum of consecutive naturals, for example, 40901 + ... + 41517.

It is an arithmetic number, because the mean of its divisors is an integer number (1704547).

Almost surely, 2^25425953 is an apocalyptic number.

It is an amenable number.

25425953 is a deficient number, since it is larger than the sum of its proper divisors (5255893).

25425953 is an equidigital number, since it uses as much as digits as its factorization.

25425953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689 (or 653 counting only the distinct ones).

The product of its digits is 54000, while the sum is 35.

The square root of 25425953 is about 5042.4153934399. The cubic root of 25425953 is about 294.0530894301.

The spelling of 25425953 in words is "twenty-five million, four hundred twenty-five thousand, nine hundred fifty-three".