1252450423131 has 4 divisors (see below), whose sum is σ = 1669933897512. Its totient is φ = 834966948752.

The previous prime is 1252450423123. The next prime is 1252450423157. The reversal of 1252450423131 is 1313240542521.

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

It is a cyclic number.

It is not a de Polignac number, because 1252450423131 - 2³ = 1252450423123 is a prime.

It is a super-2 number, since 2×1252450423131² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1252450423092 and 1252450423101.

It is not an unprimeable number, because it can be changed into a prime (1252450423171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208741737186 + ... + 208741737191.

It is an arithmetic number, because the mean of its divisors is an integer number (417483474378).

Almost surely, 2^{1252450423131} is an apocalyptic number.

1252450423131 is a deficient number, since it is larger than the sum of its proper divisors (417483474381).

1252450423131 is an equidigital number, since it uses as much as digits as its factorization.

1252450423131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417483474380.

The product of its (nonzero) digits is 28800, while the sum is 33.

Adding to 1252450423131 its reverse (1313240542521), we get a palindrome (2565690965652).

The spelling of 1252450423131 in words is "one trillion, two hundred fifty-two billion, four hundred fifty million, four hundred twenty-three thousand, one hundred thirty-one".