25730260 has 12 divisors (see below), whose sum is σ = 54033588. Its totient is φ = 10292096.

The previous prime is 25730251. The next prime is 25730267. The reversal of 25730260 is 6203752.

It can be written as a sum of positive squares in 2 ways, for example, as 18079504 + 7650756 = 4252^2 + 2766^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25730267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 643237 + ... + 643276.

It is an arithmetic number, because the mean of its divisors is an integer number (4502799).

Almost surely, 2^25730260 is an apocalyptic number.

25730260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25730260 is an abundant number, since it is smaller than the sum of its proper divisors (28303328).

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

25730260 is a wasteful number, since it uses less digits than its factorization.

25730260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1286522 (or 1286520 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 25730260 is about 5072.5003696402. The cubic root of 25730260 is about 295.2215514655.

The spelling of 25730260 in words is "twenty-five million, seven hundred thirty thousand, two hundred sixty".