25993825 has 36 divisors (see below), whose sum is σ = 38211964. Its totient is φ = 17424000.

The previous prime is 25993817. The next prime is 25993829. The reversal of 25993825 is 52839952.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 833569 + 25160256 = 913^2 + 5016^2 .

It is not a de Polignac number, because 25993825 - 2³ = 25993817 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25993829) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 38995 + ... + 39655.

Almost surely, 2^25993825 is an apocalyptic number.

25993825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25993825 is a deficient number, since it is larger than the sum of its proper divisors (12218139).

25993825 is a wasteful number, since it uses less digits than its factorization.

25993825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706 (or 690 counting only the distinct ones).

The product of its digits is 194400, while the sum is 43.

The square root of 25993825 is about 5098.4139690692. The cubic root of 25993825 is about 296.2261518899.

The spelling of 25993825 in words is "twenty-five million, nine hundred ninety-three thousand, eight hundred twenty-five".