22129801425 has 120 divisors (see below), whose sum is σ = 43512110136. Its totient is φ = 11080488960.

The previous prime is 22129801411. The next prime is 22129801501. The reversal of 22129801425 is 52410892122.

22129801425 is a `hidden beast` number, since 221 + 2 + 9 + 8 + 0 + 1 + 425 = 666.

It can be written as a sum of positive squares in 12 ways, for example, as 320123664 + 21809677761 = 17892^2 + 147681^2 .

It is not a de Polignac number, because 22129801425 - 2²⁴ = 22113024209 is a prime.

It is a super-2 number, since 2×22129801425² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22129801425.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 25233087 + ... + 25233963.

Almost surely, 2^22129801425 is an apocalyptic number.

22129801425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22129801425 is a deficient number, since it is larger than the sum of its proper divisors (21382308711).

22129801425 is a wasteful number, since it uses less digits than its factorization.

22129801425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1649 (or 1635 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The spelling of 22129801425 in words is "twenty-two billion, one hundred twenty-nine million, eight hundred one thousand, four hundred twenty-five".