1225202700 has 72 divisors (see below), whose sum is σ = 3551942800. Its totient is φ = 326073600.

The previous prime is 1225202689. The next prime is 1225202711. The reversal of 1225202700 is 72025221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1225202689) and next prime (1225202711).

It is a super-2 number, since 2×1225202700² = 3002243312174580000, which contains 22 as substring.

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 23 ways as a sum of consecutive naturals, for example, 158526 + ... + 166074.

Almost surely, 2^1225202700 is an apocalyptic number.

1225202700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1225202700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1775971400).

1225202700 is an abundant number, since it is smaller than the sum of its proper divisors (2326740100).

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

1225202700 is a wasteful number, since it uses less digits than its factorization.

1225202700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8107 (or 8100 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 1225202700 is about 35002.8955945076. The cubic root of 1225202700 is about 1070.0464940347.

Adding to 1225202700 its reverse (72025221), we get a palindrome (1297227921).

The spelling of 1225202700 in words is "one billion, two hundred twenty-five million, two hundred two thousand, seven hundred".