1225441504 has 24 divisors (see below), whose sum is σ = 2757243888. Its totient is φ = 525189120.

The previous prime is 1225441471. The next prime is 1225441513. The reversal of 1225441504 is 4051445221.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2735137 + ... + 2735584.

It is an arithmetic number, because the mean of its divisors is an integer number (114885162).

Almost surely, 2^1225441504 is an apocalyptic number.

1225441504 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1225441504 is an abundant number, since it is smaller than the sum of its proper divisors (1531802384).

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

1225441504 is an equidigital number, since it uses as much as digits as its factorization.

1225441504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5470738 (or 5470730 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 28.

The square root of 1225441504 is about 35006.3066318056. The cubic root of 1225441504 is about 1070.1160103639.

Adding to 1225441504 its reverse (4051445221), we get a palindrome (5276886725).

The spelling of 1225441504 in words is "one billion, two hundred twenty-five million, four hundred forty-one thousand, five hundred four".