1228925452500 has 480 divisors, whose sum is σ = 4234134643200. Its totient is φ = 307077120000.

The previous prime is 1228925452481. The next prime is 1228925452507. The reversal of 1228925452500 is 52545298221.

1228925452500 is a `hidden beast` number, since 1 + 2 + 2 + 8 + 92 + 5 + 4 + 52 + 500 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228925452507) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 274250260 + ... + 274254740.

It is an arithmetic number, because the mean of its divisors is an integer number (8821113840).

Almost surely, 2^{1228925452500} is an apocalyptic number.

1228925452500 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 1228925452500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2117067321600).

1228925452500 is an abundant number, since it is smaller than the sum of its proper divisors (3005209190700).

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

1228925452500 is a wasteful number, since it uses less digits than its factorization.

1228925452500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4770 (or 4747 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 45.

The spelling of 1228925452500 in words is "one trillion, two hundred twenty-eight billion, nine hundred twenty-five million, four hundred fifty-two thousand, five hundred".