122747225 has 12 divisors (see below), whose sum is σ = 161160444. Its totient is φ = 92421120.

The previous prime is 122747173. The next prime is 122747231. The reversal of 122747225 is 522747221.

It can be written as a sum of positive squares in 6 ways, for example, as 12581209 + 110166016 = 3547^2 + 10496^2 .

It is not a de Polignac number, because 122747225 - 2⁸ = 122746969 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 122747191 and 122747200.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 143984 + ... + 144833.

It is an arithmetic number, because the mean of its divisors is an integer number (13430037).

Almost surely, 2^122747225 is an apocalyptic number.

It is an amenable number.

122747225 is a deficient number, since it is larger than the sum of its proper divisors (38413219).

122747225 is a wasteful number, since it uses less digits than its factorization.

122747225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288844 (or 288839 counting only the distinct ones).

The product of its digits is 15680, while the sum is 32.

The square root of 122747225 is about 11079.1346683755. The cubic root of 122747225 is about 496.9780727060.

The spelling of 122747225 in words is "one hundred twenty-two million, seven hundred forty-seven thousand, two hundred twenty-five".