25916025 has 12 divisors (see below), whose sum is σ = 42847952. Its totient is φ = 13821840.

The previous prime is 25915997. The next prime is 25916027. The reversal of 25916025 is 52061952.

It is a happy number.

It is not a de Polignac number, because 25916025 - 2⁶ = 25915961 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 25915983 and 25916001.

It is not an unprimeable number, because it can be changed into a prime (25916027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 172699 + ... + 172848.

Almost surely, 2^25916025 is an apocalyptic number.

25916025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25916025 is a deficient number, since it is larger than the sum of its proper divisors (16931927).

25916025 is a wasteful number, since it uses less digits than its factorization.

25916025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345560 (or 345555 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 25916025 is about 5090.7784277063. The cubic root of 25916025 is about 295.9303197620.

Adding to 25916025 its reverse (52061952), we get a palindrome (77977977).

The spelling of 25916025 in words is "twenty-five million, nine hundred sixteen thousand, twenty-five".