1251325750 has 32 divisors (see below), whose sum is σ = 2465779680. Its totient is φ = 474184800.

The previous prime is 1251325739. The next prime is 1251325759. The reversal of 1251325750 is 575231521.

It is a super-2 number, since 2×1251325750² = 3131632265226125000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1251325759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126969 + ... + 136468.

It is an arithmetic number, because the mean of its divisors is an integer number (77055615).

Almost surely, 2^1251325750 is an apocalyptic number.

1251325750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1251325750 is a deficient number, since it is larger than the sum of its proper divisors (1214453930).

1251325750 is a wasteful number, since it uses less digits than its factorization.

1251325750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263473 (or 263463 counting only the distinct ones).

The product of its (nonzero) digits is 10500, while the sum is 31.

The square root of 1251325750 is about 35374.0830269846. The cubic root of 1251325750 is about 1077.5980426970.

The spelling of 1251325750 in words is "one billion, two hundred fifty-one million, three hundred twenty-five thousand, seven hundred fifty".