1254731520473 has 2 divisors, whose sum is σ = 1254731520474. Its totient is φ = 1254731520472.

The previous prime is 1254731520451. The next prime is 1254731520481. The reversal of 1254731520473 is 3740251374521.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 705714244624 + 549017275849 = 840068^2 + 740957^2 .

It is a cyclic number.

It is not a de Polignac number, because 1254731520473 - 2¹⁰ = 1254731519449 is a prime.

It is not a weakly prime, because it can be changed into another prime (1254701520473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627365760236 + 627365760237.

It is an arithmetic number, because the mean of its divisors is an integer number (627365760237).

Almost surely, 2^{1254731520473} is an apocalyptic number.

It is an amenable number.

1254731520473 is a deficient number, since it is larger than the sum of its proper divisors (1).

1254731520473 is an equidigital number, since it uses as much as digits as its factorization.

1254731520473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 705600, while the sum is 44.

Adding to 1254731520473 its reverse (3740251374521), we get a palindrome (4994982894994).

The spelling of 1254731520473 in words is "one trillion, two hundred fifty-four billion, seven hundred thirty-one million, five hundred twenty thousand, four hundred seventy-three".