1125021310400 has 168 divisors, whose sum is σ = 3007586866704. Its totient is φ = 411715584000.

The previous prime is 1125021310367. The next prime is 1125021310433. The reversal of 1125021310400 is 40131205211.

It is an interprime number because it is at equal distance from previous prime (1125021310367) and next prime (1125021310433).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2111075 + ... + 2589725.

It is an arithmetic number, because the mean of its divisors is an integer number (17902302778).

Almost surely, 2^{1125021310400} is an apocalyptic number.

1125021310400 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 1125021310400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1503793433352).

1125021310400 is an abundant number, since it is smaller than the sum of its proper divisors (1882565556304).

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

1125021310400 is a wasteful number, since it uses less digits than its factorization.

1125021310400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478799 (or 478784 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 1125021310400 its reverse (40131205211), we get a palindrome (1165152515611).

The spelling of 1125021310400 in words is "one trillion, one hundred twenty-five billion, twenty-one million, three hundred ten thousand, four hundred".