22525220525 has 6 divisors (see below), whose sum is σ = 27931273482. Its totient is φ = 18020176400.

The previous prime is 22525220503. The next prime is 22525220539. The reversal of 22525220525 is 52502252522.

It can be written as a sum of positive squares in 3 ways, for example, as 1347403849 + 21177816676 = 36707^2 + 145526^2 .

It is not a de Polignac number, because 22525220525 - 2²⁰ = 22524171949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22525220491 and 22525220500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 450504386 + ... + 450504435.

It is an arithmetic number, because the mean of its divisors is an integer number (4655212247).

Almost surely, 2^22525220525 is an apocalyptic number.

22525220525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22525220525 is a deficient number, since it is larger than the sum of its proper divisors (5406052957).

22525220525 is an equidigital number, since it uses as much as digits as its factorization.

22525220525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901008831 (or 901008826 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 32.

The spelling of 22525220525 in words is "twenty-two billion, five hundred twenty-five million, two hundred twenty thousand, five hundred twenty-five".