25721012430344 has 48 divisors (see below), whose sum is σ = 60582549955200. Its totient is φ = 10021173671520.

The previous prime is 25721012430301. The next prime is 25721012430367. The reversal of 25721012430344 is 44303421012752.

It is a super-2 number, since 2×25721012430344² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25721012430298 and 25721012430307.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1897942784 + ... + 1897956335.

It is an arithmetic number, because the mean of its divisors is an integer number (1262136457400).

Almost surely, 2^{25721012430344} is an apocalyptic number.

It is an amenable number.

25721012430344 is an abundant number, since it is smaller than the sum of its proper divisors (34861537524856).

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

25721012430344 is a wasteful number, since it uses less digits than its factorization.

25721012430344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3795899154 (or 3795899139 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 38.

The spelling of 25721012430344 in words is "twenty-five trillion, seven hundred twenty-one billion, twelve million, four hundred thirty thousand, three hundred forty-four".