1225440600 has 48 divisors (see below), whose sum is σ = 3798867720. Its totient is φ = 326784000.

The previous prime is 1225440581. The next prime is 1225440647. The reversal of 1225440600 is 60445221.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1020601 + ... + 1021800.

Almost surely, 2^1225440600 is an apocalyptic number.

1225440600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1225440600 is an abundant number, since it is smaller than the sum of its proper divisors (2573427120).

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

1225440600 is a wasteful number, since it uses less digits than its factorization.

1225440600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2042420 (or 2042411 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 1225440600 is about 35006.2937198442. The cubic root of 1225440600 is about 1070.1157472247.

Adding to 1225440600 its reverse (60445221), we get a palindrome (1285885821).

The spelling of 1225440600 in words is "one billion, two hundred twenty-five million, four hundred forty thousand, six hundred".