1225202104 has 64 divisors (see below), whose sum is σ = 2785440960. Its totient is φ = 493209600.

The previous prime is 1225202101. The next prime is 1225202131. The reversal of 1225202104 is 4012025221.

It is a super-2 number, since 2×1225202104² = 3002240391292053632, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225202101) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 643554 + ... + 645454.

It is an arithmetic number, because the mean of its divisors is an integer number (43522515).

Almost surely, 2^1225202104 is an apocalyptic number.

1225202104 is a gapful number since it is divisible by the number (14) 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 1225202104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1392720480).

1225202104 is an abundant number, since it is smaller than the sum of its proper divisors (1560238856).

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

1225202104 is a wasteful number, since it uses less digits than its factorization.

1225202104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2608 (or 2604 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 1225202104 is about 35002.8870809252. The cubic root of 1225202104 is about 1070.0463205266.

Adding to 1225202104 its reverse (4012025221), we get a palindrome (5237227325).

The spelling of 1225202104 in words is "one billion, two hundred twenty-five million, two hundred two thousand, one hundred four".