1251250125 has 32 divisors (see below), whose sum is σ = 2113198464. Its totient is φ = 657360000.

The previous prime is 1251250109. The next prime is 1251250139. The reversal of 1251250125 is 5210521521.

1251250125 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1251250125 - 2⁴ = 1251250109 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1251250095 and 1251250104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 225 + ... + 50025.

It is an arithmetic number, because the mean of its divisors is an integer number (66037452).

Almost surely, 2^1251250125 is an apocalyptic number.

1251250125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1251250125 is a deficient number, since it is larger than the sum of its proper divisors (861948339).

1251250125 is an equidigital number, since it uses as much as digits as its factorization.

1251250125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49886 (or 49876 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 24.

The square root of 1251250125 is about 35373.0140785317. The cubic root of 1251250125 is about 1077.5763337232.

Adding to 1251250125 its reverse (5210521521), we get a palindrome (6461771646).

The spelling of 1251250125 in words is "one billion, two hundred fifty-one million, two hundred fifty thousand, one hundred twenty-five".