25906025 has 12 divisors (see below), whose sum is σ = 33814800. Its totient is φ = 19633680.

The previous prime is 25906007. The next prime is 25906057. The reversal of 25906025 is 52060952.

It is not a de Polignac number, because 25906025 - 2¹² = 25901929 is a prime.

It is a super-2 number, since 2×25906025² = 1342244262601250, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26795 + ... + 27744.

It is an arithmetic number, because the mean of its divisors is an integer number (2817900).

Almost surely, 2^25906025 is an apocalyptic number.

25906025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25906025 is a deficient number, since it is larger than the sum of its proper divisors (7908775).

25906025 is a wasteful number, since it uses less digits than its factorization.

25906025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54568 (or 54563 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 25906025 is about 5089.7961648773. The cubic root of 25906025 is about 295.8922521454.

Adding to 25906025 its reverse (52060952), we get a palindrome (77966977).

The spelling of 25906025 in words is "twenty-five million, nine hundred six thousand, twenty-five".