1225204464 has 80 divisors (see below), whose sum is σ = 3470670720. Its totient is φ = 369358080.

The previous prime is 1225204439. The next prime is 1225204469. The reversal of 1225204464 is 4644025221.

It is a super-2 number, since 2×1225204464² = 3002251957211054592, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225204469) 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, 98127 + ... + 109905.

It is an arithmetic number, because the mean of its divisors is an integer number (43383384).

Almost surely, 2^1225204464 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 1225204464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1735335360).

1225204464 is an abundant number, since it is smaller than the sum of its proper divisors (2245466256).

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

1225204464 is a wasteful number, since it uses less digits than its factorization.

1225204464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11998 (or 11992 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

The square root of 1225204464 is about 35002.9207924139. The cubic root of 1225204464 is about 1070.0470075718.

Adding to 1225204464 its reverse (4644025221), we get a palindrome (5869229685).

The spelling of 1225204464 in words is "one billion, two hundred twenty-five million, two hundred four thousand, four hundred sixty-four".