1000451131252 has 6 divisors (see below), whose sum is σ = 1750789479698. Its totient is φ = 500225565624.

The previous prime is 1000451131219. The next prime is 1000451131261. The reversal of 1000451131252 is 2521311540001.

It can be written as a sum of positive squares in only one way, i.e., 998408633616 + 2042497636 = 999204^2 + 45194^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125056391403 + ... + 125056391410.

Almost surely, 2^{1000451131252} is an apocalyptic number.

It is an amenable number.

1000451131252 is a deficient number, since it is larger than the sum of its proper divisors (750338348446).

1000451131252 is a wasteful number, since it uses less digits than its factorization.

1000451131252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250112782817 (or 250112782815 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 1000451131252 its reverse (2521311540001), we get a palindrome (3521762671253).

The spelling of 1000451131252 in words is "one trillion, four hundred fifty-one million, one hundred thirty-one thousand, two hundred fifty-two".