1225002600 has 144 divisors (see below), whose sum is σ = 4142130720. Its totient is φ = 324432000.

The previous prime is 1225002593. The next prime is 1225002617. The reversal of 1225002600 is 62005221.

1225002600 is a `hidden beast` number, since 12 + 2 + 50 + 0 + 2 + 600 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 269547 + ... + 274053.

Almost surely, 2^1225002600 is an apocalyptic number.

1225002600 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 1225002600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2071065360).

1225002600 is an abundant number, since it is smaller than the sum of its proper divisors (2917128120).

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

1225002600 is a wasteful number, since it uses less digits than its factorization.

1225002600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4680 (or 4668 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1225002600 is about 35000.0371428374. The cubic root of 1225002600 is about 1069.9882375625.

Adding to 1225002600 its reverse (62005221), we get a palindrome (1287007821).

The spelling of 1225002600 in words is "one billion, two hundred twenty-five million, two thousand, six hundred".