1245522678 has 16 divisors (see below), whose sum is σ = 2491391280. Its totient is φ = 415116576.

The previous prime is 1245522671. The next prime is 1245522679. The reversal of 1245522678 is 8762255421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245522671) 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, 76776 + ... + 91572.

It is an arithmetic number, because the mean of its divisors is an integer number (155711955).

Almost surely, 2^1245522678 is an apocalyptic number.

1245522678 is an abundant number, since it is smaller than the sum of its proper divisors (1245868602).

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

1245522678 is a wasteful number, since it uses less digits than its factorization.

1245522678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28831.

The product of its digits is 268800, while the sum is 42.

The square root of 1245522678 is about 35291.9633627828. The cubic root of 1245522678 is about 1075.9296599771.

The spelling of 1245522678 in words is "one billion, two hundred forty-five million, five hundred twenty-two thousand, six hundred seventy-eight".