1225300550 has 24 divisors (see below), whose sum is σ = 2281739376. Its totient is φ = 489543840.

The previous prime is 1225300541. The next prime is 1225300577. The reversal of 1225300550 is 550035221.

It is a super-2 number, since 2×1225300550² = 3002722875660605000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 29879 + ... + 57821.

It is an arithmetic number, because the mean of its divisors is an integer number (95072474).

Almost surely, 2^1225300550 is an apocalyptic number.

1225300550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1225300550 is a deficient number, since it is larger than the sum of its proper divisors (1056438826).

1225300550 is a wasteful number, since it uses less digits than its factorization.

1225300550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28832 (or 28827 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 1225300550 is about 35004.2933081072. The cubic root of 1225300550 is about 1070.0749794606.

Adding to 1225300550 its reverse (550035221), we get a palindrome (1775335771).

The spelling of 1225300550 in words is "one billion, two hundred twenty-five million, three hundred thousand, five hundred fifty".