1250320320 has 224 divisors, whose sum is σ = 4506163200. Its totient is φ = 326218752.

The previous prime is 1250320283. The next prime is 1250320321. The reversal of 1250320320 is 230230521.

1250320320 is a `hidden beast` number, since 1 + 25 + 0 + 320 + 320 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1250320293 and 1250320302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1250320321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 404541 + ... + 407619.

It is an arithmetic number, because the mean of its divisors is an integer number (20116800).

Almost surely, 2^1250320320 is an apocalyptic number.

1250320320 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 1250320320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2253081600).

1250320320 is an abundant number, since it is smaller than the sum of its proper divisors (3255842880).

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

1250320320 is a wasteful number, since it uses less digits than its factorization.

1250320320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3152 (or 3136 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 1250320320 is about 35359.8687780371. The cubic root of 1250320320 is about 1077.3093516266.

Adding to 1250320320 its reverse (230230521), we get a palindrome (1480550841).

It can be divided in two parts, 12503 and 20320, that added together give a palindrome (32823).

The spelling of 1250320320 in words is "one billion, two hundred fifty million, three hundred twenty thousand, three hundred twenty".