1225404504 has 64 divisors (see below), whose sum is σ = 3410748000. Its totient is φ = 407646720.

The previous prime is 1225404503. The next prime is 1225404529. The reversal of 1225404504 is 4054045221.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225404503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107092 + ... + 117980.

Almost surely, 2^1225404504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1225404504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1705374000).

1225404504 is an abundant number, since it is smaller than the sum of its proper divisors (2185343496).

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

1225404504 is a wasteful number, since it uses less digits than its factorization.

1225404504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11425 (or 11415 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 1225404504 is about 35005.7781516138. The cubic root of 1225404504 is about 1070.1052401801.

Adding to 1225404504 its reverse (4054045221), we get a palindrome (5279449725).

The spelling of 1225404504 in words is "one billion, two hundred twenty-five million, four hundred four thousand, five hundred four".