122857425 has 24 divisors (see below), whose sum is σ = 225694880. Its totient is φ = 65523600.

The previous prime is 122857417. The next prime is 122857429. The reversal of 122857425 is 524758221.

It is a happy number.

122857425 is a `hidden beast` number, since 1 + 228 + 5 + 7 + 425 = 666.

It is not a de Polignac number, because 122857425 - 2³ = 122857417 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122857425.

It is not an unprimeable number, because it can be changed into a prime (122857429) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 90331 + ... + 91680.

Almost surely, 2^122857425 is an apocalyptic number.

122857425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

122857425 is a deficient number, since it is larger than the sum of its proper divisors (102837455).

122857425 is a wasteful number, since it uses less digits than its factorization.

122857425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182030 (or 182019 counting only the distinct ones).

The product of its digits is 44800, while the sum is 36.

The square root of 122857425 is about 11084.1068652373. The cubic root of 122857425 is about 497.1267538737.

It can be divided in two parts, 1228 and 57425, that added together give a triangular number (58653 = T₃₄₂).

The spelling of 122857425 in words is "one hundred twenty-two million, eight hundred fifty-seven thousand, four hundred twenty-five".