1252641473 has 2 divisors, whose sum is σ = 1252641474. Its totient is φ = 1252641472.

The previous prime is 1252641461. The next prime is 1252641493. The reversal of 1252641473 is 3741462521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1225840144 + 26801329 = 35012^2 + 5177^2 .

It is a cyclic number.

It is not a de Polignac number, because 1252641473 - 2¹⁰ = 1252640449 is a prime.

It is a super-2 number, since 2×1252641473² = 3138221319759219458, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1252641493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626320736 + 626320737.

It is an arithmetic number, because the mean of its divisors is an integer number (626320737).

Almost surely, 2^1252641473 is an apocalyptic number.

It is an amenable number.

1252641473 is a deficient number, since it is larger than the sum of its proper divisors (1).

1252641473 is an equidigital number, since it uses as much as digits as its factorization.

1252641473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 35.

The square root of 1252641473 is about 35392.6754145544. The cubic root of 1252641473 is about 1077.9755953023.

The spelling of 1252641473 in words is "one billion, two hundred fifty-two million, six hundred forty-one thousand, four hundred seventy-three".