25596001220 has 24 divisors (see below), whose sum is σ = 53867716224. Its totient is φ = 10216283616.

The previous prime is 25596001213. The next prime is 25596001241. The reversal of 25596001220 is 2210069552.

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, 1372814 + ... + 1391333.

It is an arithmetic number, because the mean of its divisors is an integer number (2244488176).

Almost surely, 2^25596001220 is an apocalyptic number.

25596001220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25596001220 is an abundant number, since it is smaller than the sum of its proper divisors (28271715004).

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

25596001220 is a wasteful number, since it uses less digits than its factorization.

25596001220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2764619 (or 2764617 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 32.

The spelling of 25596001220 in words is "twenty-five billion, five hundred ninety-six million, one thousand, two hundred twenty".