1225277064 has 128 divisors (see below), whose sum is σ = 3738960000. Its totient is φ = 368697600.

The previous prime is 1225277063. The next prime is 1225277093. The reversal of 1225277064 is 4607725221.

It is a happy number.

1225277064 is a `hidden beast` number, since 1 + 2 + 2 + 527 + 70 + 64 = 666.

1225277064 is nontrivially palindromic in base 7.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1225277063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 352294 + ... + 355754.

It is an arithmetic number, because the mean of its divisors is an integer number (29210625).

Almost surely, 2^1225277064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1225277064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1869480000).

1225277064 is an abundant number, since it is smaller than the sum of its proper divisors (2513682936).

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

1225277064 is a wasteful number, since it uses less digits than its factorization.

1225277064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3636 (or 3626 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 1225277064 is about 35003.9578333651. The cubic root of 1225277064 is about 1070.0681425144.

The spelling of 1225277064 in words is "one billion, two hundred twenty-five million, two hundred seventy-seven thousand, sixty-four".