1300252500 has 150 divisors (see below), whose sum is σ = 4248197954. Its totient is φ = 346680000.

The previous prime is 1300252489. The next prime is 1300252549. The reversal of 1300252500 is 52520031.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 658846224 + 641406276 = 25668^2 + 25326^2 .

It is a tau number, because it is divible by the number of its divisors (150).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 49 ways as a sum of consecutive naturals, for example, 199290 + ... + 205710.

Almost surely, 2^1300252500 is an apocalyptic number.

1300252500 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 1300252500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2124098977).

1300252500 is an abundant number, since it is smaller than the sum of its proper divisors (2947945454).

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

1300252500 is an equidigital number, since it uses as much as digits as its factorization.

1300252500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6457 (or 6431 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 1300252500 is about 36059.0141296181. The cubic root of 1300252500 is about 1091.4635391798.

Adding to 1300252500 its reverse (52520031), we get a palindrome (1352772531).

The spelling of 1300252500 in words is "one billion, three hundred million, two hundred fifty-two thousand, five hundred".