25280030528 has 28 divisors (see below), whose sum is σ = 50871619872. Its totient is φ = 12461984640.

The previous prime is 25280030521. The next prime is 25280030609. The reversal of 25280030528 is 82503008252.

It is a super-2 number, since 2×25280030528² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25280030521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2777150 + ... + 2786237.

Almost surely, 2^25280030528 is an apocalyptic number.

It is an amenable number.

25280030528 is an abundant number, since it is smaller than the sum of its proper divisors (25591589344).

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

25280030528 is an equidigital number, since it uses as much as digits as its factorization.

25280030528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5563470 (or 5563460 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 35.

The spelling of 25280030528 in words is "twenty-five billion, two hundred eighty million, thirty thousand, five hundred twenty-eight".