1225567530 has 128 divisors (see below), whose sum is σ = 3577271040. Its totient is φ = 296110080.

The previous prime is 1225567477. The next prime is 1225567559. The reversal of 1225567530 is 357655221.

1225567530 is a `hidden beast` number, since 1 + 2 + 2 + 556 + 75 + 30 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1285534 + ... + 1286486.

It is an arithmetic number, because the mean of its divisors is an integer number (27947430).

Almost surely, 2^1225567530 is an apocalyptic number.

1225567530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1225567530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1788635520).

1225567530 is an abundant number, since it is smaller than the sum of its proper divisors (2351703510).

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

1225567530 is a wasteful number, since it uses less digits than its factorization.

1225567530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1413 (or 1407 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 36.

The square root of 1225567530 is about 35008.1066326073. The cubic root of 1225567530 is about 1070.1526931478.

The spelling of 1225567530 in words is "one billion, two hundred twenty-five million, five hundred sixty-seven thousand, five hundred thirty".