25505260 has 24 divisors (see below), whose sum is σ = 58430736. Its totient is φ = 9274560.

The previous prime is 25505231. The next prime is 25505261. The reversal of 25505260 is 6250552.

It is not an unprimeable number, because it can be changed into a prime (25505261) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 57747 + ... + 58186.

It is an arithmetic number, because the mean of its divisors is an integer number (2434614).

Almost surely, 2^25505260 is an apocalyptic number.

25505260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25505260 is an abundant number, since it is smaller than the sum of its proper divisors (32925476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25505260 is a wasteful number, since it uses less digits than its factorization.

25505260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115953 (or 115951 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 25505260 is about 5050.2732599336. The cubic root of 25505260 is about 294.3585026133.

The spelling of 25505260 in words is "twenty-five million, five hundred five thousand, two hundred sixty".