25005525 has 24 divisors (see below), whose sum is σ = 42464544. Its totient is φ = 12974400.

The previous prime is 25005517. The next prime is 25005527. The reversal of 25005525 is 52550052.

It is not a de Polignac number, because 25005525 - 2³ = 25005517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25005495 and 25005504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25005527) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1731 + ... + 7280.

It is an arithmetic number, because the mean of its divisors is an integer number (1769356).

Almost surely, 2^25005525 is an apocalyptic number.

25005525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25005525 is a deficient number, since it is larger than the sum of its proper divisors (17459019).

25005525 is a wasteful number, since it uses less digits than its factorization.

25005525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9061 (or 9056 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 24.

The square root of 25005525 is about 5000.5524694777. The cubic root of 25005525 is about 292.4233124987.

Adding to 25005525 its reverse (52550052), we get a palindrome (77555577).

The spelling of 25005525 in words is "twenty-five million, five thousand, five hundred twenty-five".