122808643425 has 144 divisors (see below), whose sum is σ = 249726516480. Its totient is φ = 58819841280.

The previous prime is 122808643421. The next prime is 122808643439. The reversal of 122808643425 is 524346808221.

122808643425 is a `hidden beast` number, since 1 + 228 + 0 + 86 + 4 + 342 + 5 = 666.

It is not a de Polignac number, because 122808643425 - 2² = 122808643421 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (122808643421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 12007864 + ... + 12018086.

It is an arithmetic number, because the mean of its divisors is an integer number (1734211920).

Almost surely, 2^122808643425 is an apocalyptic number.

122808643425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

122808643425 is an abundant number, since it is smaller than the sum of its proper divisors (126917873055).

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

122808643425 is a wasteful number, since it uses less digits than its factorization.

122808643425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10329 (or 10281 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 45.

The spelling of 122808643425 in words is "one hundred twenty-two billion, eight hundred eight million, six hundred forty-three thousand, four hundred twenty-five".