25529412722 has 18 divisors (see below), whose sum is σ = 42095981487. Its totient is φ = 11603148700.

The previous prime is 25529412709. The next prime is 25529412751. The reversal of 25529412722 is 22721492552.

It can be written as a sum of positive squares in only one way, i.e., 12764706361 + 12764706361 = 112981^2 + 112981^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=112981.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25529412722.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2480447 + ... + 2490717.

Almost surely, 2^25529412722 is an apocalyptic number.

25529412722 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

25529412722 is a deficient number, since it is larger than the sum of its proper divisors (16566568765).

25529412722 is an frugal number, since it uses more digits than its factorization.

25529412722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20566 (or 10284 counting only the distinct ones).

The product of its digits is 201600, while the sum is 41.

The spelling of 25529412722 in words is "twenty-five billion, five hundred twenty-nine million, four hundred twelve thousand, seven hundred twenty-two".