25525025 has 6 divisors (see below), whose sum is σ = 31651062. Its totient is φ = 20420000.

The previous prime is 25524991. The next prime is 25525039. The reversal of 25525025 is 52052552.

It can be written as a sum of positive squares in 3 ways, for example, as 5202961 + 20322064 = 2281^2 + 4508^2 .

It is not a de Polignac number, because 25525025 - 2¹⁰ = 25524001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25524985 and 25525003.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 510476 + ... + 510525.

It is an arithmetic number, because the mean of its divisors is an integer number (5275177).

Almost surely, 2^25525025 is an apocalyptic number.

25525025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25525025 is a deficient number, since it is larger than the sum of its proper divisors (6126037).

25525025 is a wasteful number, since it uses less digits than its factorization.

25525025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021011 (or 1021006 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 26.

The square root of 25525025 is about 5052.2297057834. The cubic root of 25525025 is about 294.4345195289.

Adding to 25525025 its reverse (52052552), we get a palindrome (77577577).

The spelling of 25525025 in words is "twenty-five million, five hundred twenty-five thousand, twenty-five".