2251152731005 has 4 divisors (see below), whose sum is σ = 2701383277212. Its totient is φ = 1800922184800.

The previous prime is 2251152730993. The next prime is 2251152731017. The reversal of 2251152731005 is 5001372511522.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2251152730993) and next prime (2251152731017).

It can be written as a sum of positive squares in 2 ways, for example, as 528787843684 + 1722364887321 = 727178^2 + 1312389^2 .

It is not a de Polignac number, because 2251152731005 - 2⁷ = 2251152730877 is a prime.

It is a super-2 number, since 2×2251152731005² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 225115273096 + ... + 225115273105.

It is an arithmetic number, because the mean of its divisors is an integer number (675345819303).

Almost surely, 2^{2251152731005} is an apocalyptic number.

It is an amenable number.

2251152731005 is a deficient number, since it is larger than the sum of its proper divisors (450230546207).

2251152731005 is an equidigital number, since it uses as much as digits as its factorization.

2251152731005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450230546206.

The product of its (nonzero) digits is 21000, while the sum is 34.

The spelling of 2251152731005 in words is "two trillion, two hundred fifty-one billion, one hundred fifty-two million, seven hundred thirty-one thousand, five".