1000252145 has 4 divisors (see below), whose sum is σ = 1200302580. Its totient is φ = 800201712.

The previous prime is 1000252139. The next prime is 1000252151. The reversal of 1000252145 is 5412520001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5412520001 = 7 ⋅773217143.

It is an interprime number because it is at equal distance from previous prime (1000252139) and next prime (1000252151).

It can be written as a sum of positive squares in 2 ways, for example, as 449270416 + 550981729 = 21196^2 + 23473^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000252145 - 2¹⁶ = 1000186609 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100025210 + ... + 100025219.

It is an arithmetic number, because the mean of its divisors is an integer number (300075645).

Almost surely, 2^1000252145 is an apocalyptic number.

It is an amenable number.

1000252145 is a deficient number, since it is larger than the sum of its proper divisors (200050435).

1000252145 is an equidigital number, since it uses as much as digits as its factorization.

1000252145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200050434.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 1000252145 is about 31626.7631129080. The cubic root of 1000252145 is about 1000.0840412702.

Adding to 1000252145 its reverse (5412520001), we get a palindrome (6412772146).

The spelling of 1000252145 in words is "one billion, two hundred fifty-two thousand, one hundred forty-five".