1250530000 has 50 divisors (see below), whose sum is σ = 3027682394. Its totient is φ = 500208000.

The previous prime is 1250529997. The next prime is 1250530003. The reversal of 1250530000 is 350521.

It is an interprime number because it is at equal distance from previous prime (1250529997) and next prime (1250530003).

It can be written as a sum of positive squares in 5 ways, for example, as 740492944 + 510037056 = 27212^2 + 22584^2 .

It is a tau number, because it is divible by the number of its divisors (50).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1250530003) 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, 52527 + ... + 72526.

Almost surely, 2^1250530000 is an apocalyptic number.

1250530000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1250530000 is an abundant number, since it is smaller than the sum of its proper divisors (1777152394).

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

1250530000 is an equidigital number, since it uses as much as digits as its factorization.

1250530000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125081 (or 125060 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 1250530000 is about 35362.8335968712. The cubic root of 1250530000 is about 1077.3695702216.

Adding to 1250530000 its reverse (350521), we get a palindrome (1250880521).

The spelling of 1250530000 in words is "one billion, two hundred fifty million, five hundred thirty thousand".