25575530280 has 64 divisors (see below), whose sum is σ = 76743771840. Its totient is φ = 6818614272.

The previous prime is 25575530249. The next prime is 25575530291. The reversal of 25575530280 is 8203557552.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 577072 + ... + 619808.

It is an arithmetic number, because the mean of its divisors is an integer number (1199121435).

Almost surely, 2^25575530280 is an apocalyptic number.

25575530280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25575530280 is an abundant number, since it is smaller than the sum of its proper divisors (51168241560).

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

25575530280 is a wasteful number, since it uses less digits than its factorization.

25575530280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47738 (or 47734 counting only the distinct ones).

The product of its (nonzero) digits is 420000, while the sum is 42.

The spelling of 25575530280 in words is "twenty-five billion, five hundred seventy-five million, five hundred thirty thousand, two hundred eighty".