1275025000 has 48 divisors (see below), whose sum is σ = 2988207180. Its totient is φ = 510000000.

The previous prime is 1275024931. The next prime is 1275025019. The reversal of 1275025000 is 5205721.

It can be written as a sum of positive squares in 6 ways, for example, as 45400644 + 1229624356 = 6738^2 + 35066^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 501 + ... + 50500.

Almost surely, 2^1275025000 is an apocalyptic number.

1275025000 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 1275025000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1494103590).

1275025000 is an abundant number, since it is smaller than the sum of its proper divisors (1713182180).

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

1275025000 is an frugal number, since it uses more digits than its factorization.

1275025000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51032 (or 51008 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 1275025000 is about 35707.4922110192. The cubic root of 1275025000 is about 1084.3585298431.

The spelling of 1275025000 in words is "one billion, two hundred seventy-five million, twenty-five thousand".