1252501145 has 8 divisors (see below), whose sum is σ = 1717715904. Its totient is φ = 858857904.

The previous prime is 1252501123. The next prime is 1252501157. The reversal of 1252501145 is 5411052521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1252501145 - 2⁸ = 1252500889 is a prime.

It is a super-2 number, since 2×1252501145² = 3137518236452622050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17892839 + ... + 17892908.

It is an arithmetic number, because the mean of its divisors is an integer number (214714488).

Almost surely, 2^1252501145 is an apocalyptic number.

It is an amenable number.

1252501145 is a deficient number, since it is larger than the sum of its proper divisors (465214759).

1252501145 is an equidigital number, since it uses as much as digits as its factorization.

1252501145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35785759.

The product of its (nonzero) digits is 2000, while the sum is 26.

The square root of 1252501145 is about 35390.6929149459. The cubic root of 1252501145 is about 1077.9353401531.

Adding to 1252501145 its reverse (5411052521), we get a palindrome (6663553666).

The spelling of 1252501145 in words is "one billion, two hundred fifty-two million, five hundred one thousand, one hundred forty-five".