25530034280 has 32 divisors (see below), whose sum is σ = 58526404200. Its totient is φ = 10019333376.

The previous prime is 25530034279. The next prime is 25530034297. The reversal of 25530034280 is 8243003552.

It can be written as a sum of positive squares in 4 ways, for example, as 15533633956 + 9996400324 = 124634^2 + 99982^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6019115 + ... + 6023354.

Almost surely, 2^25530034280 is an apocalyptic number.

25530034280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25530034280 is an abundant number, since it is smaller than the sum of its proper divisors (32996369920).

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

25530034280 is a wasteful number, since it uses less digits than its factorization.

25530034280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12042533 (or 12042529 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

The spelling of 25530034280 in words is "twenty-five billion, five hundred thirty million, thirty-four thousand, two hundred eighty".