1531250000002 has 32 divisors (see below), whose sum is σ = 2428094588400. Its totient is φ = 723123867648.

The previous prime is 1531249999999. The next prime is 1531250000009. The reversal of 1531250000002 is 2000000521351.

It can be written as a sum of positive squares in 8 ways, for example, as 765626750001 + 765623250001 = 875001^2 + 874999^2 .

It is a super-2 number, since 2×1531250000002² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1531250000009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 296874 + ... + 1775002.

Almost surely, 2^{1531250000002} is an apocalyptic number.

1531250000002 is a deficient number, since it is larger than the sum of its proper divisors (896844588398).

1531250000002 is a wasteful number, since it uses less digits than its factorization.

1531250000002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1478550.

The product of its (nonzero) digits is 300, while the sum is 19.

Adding to 1531250000002 its reverse (2000000521351), we get a palindrome (3531250521353).

The spelling of 1531250000002 in words is "one trillion, five hundred thirty-one billion, two hundred fifty million, two", and thus it is an aban number.