1250320000 has 80 divisors (see below), whose sum is σ = 3112792650. Its totient is φ = 500096000.

The previous prime is 1250319977. The next prime is 1250320003. The reversal of 1250320000 is 230521.

It can be written as a sum of positive squares in 5 ways, for example, as 272382016 + 977937984 = 16504^2 + 31272^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (1250320003) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 72186 + ... + 87814.

Almost surely, 2^1250320000 is an apocalyptic number.

1250320000 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 1250320000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1556396325).

1250320000 is an abundant number, since it is smaller than the sum of its proper divisors (1862472650).

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

1250320000 is an frugal number, since it uses more digits than its factorization.

1250320000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15663 (or 15636 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 1250320000 is about 35359.8642531331. The cubic root of 1250320000 is about 1077.3092597198.

Adding to 1250320000 its reverse (230521), we get a palindrome (1250550521).

It can be divided in two parts, 1250 and 320000, that multiplied together give a square (400000000 = 20000²).

The spelling of 1250320000 in words is "one billion, two hundred fifty million, three hundred twenty thousand".