1225684347 has 8 divisors (see below), whose sum is σ = 1646003520. Its totient is φ = 811244040.

The previous prime is 1225684321. The next prime is 1225684363. The reversal of 1225684347 is 7434865221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1225684347 - 2¹¹ = 1225682299 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1225684299 and 1225684308.

It is not an unprimeable number, because it can be changed into a prime (1225686347) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1469229 + ... + 1470062.

It is an arithmetic number, because the mean of its divisors is an integer number (205750440).

Almost surely, 2^1225684347 is an apocalyptic number.

1225684347 is a deficient number, since it is larger than the sum of its proper divisors (420319173).

1225684347 is a wasteful number, since it uses less digits than its factorization.

1225684347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2939433.

The product of its digits is 322560, while the sum is 42.

The square root of 1225684347 is about 35009.7750206996. The cubic root of 1225684347 is about 1070.1866931933.

The spelling of 1225684347 in words is "one billion, two hundred twenty-five million, six hundred eighty-four thousand, three hundred forty-seven".