1226725500 has 768 divisors, whose sum is σ = 5166120960. Its totient is φ = 217728000.

The previous prime is 1226725471. The next prime is 1226725517. The reversal of 1226725500 is 55276221.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 28528479 + ... + 28528521.

It is an arithmetic number, because the mean of its divisors is an integer number (6726720).

Almost surely, 2^1226725500 is an apocalyptic number.

1226725500 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 1226725500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2583060480).

1226725500 is an abundant number, since it is smaller than the sum of its proper divisors (3939395460).

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

1226725500 is a wasteful number, since it uses less digits than its factorization.

1226725500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115 (or 103 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 1226725500 is about 35024.6413257866. The cubic root of 1226725500 is about 1070.4896294660.

The spelling of 1226725500 in words is "one billion, two hundred twenty-six million, seven hundred twenty-five thousand, five hundred".