1425324221531 has 12 divisors (see below), whose sum is σ = 1661094998640. Its totient is φ = 1219448215440.

The previous prime is 1425324221413. The next prime is 1425324221543. The reversal of 1425324221531 is 1351224235241.

It is a de Polignac number, because none of the positive numbers 2^k-1425324221531 is a prime.

It is a super-2 number, since 2×1425324221531² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1425324221491 and 1425324221500.

It is not an unprimeable number, because it can be changed into a prime (1425324221551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26857271 + ... + 26910288.

It is an arithmetic number, because the mean of its divisors is an integer number (138424583220).

Almost surely, 2^{1425324221531} is an apocalyptic number.

1425324221531 is a deficient number, since it is larger than the sum of its proper divisors (235770777109).

1425324221531 is an equidigital number, since it uses as much as digits as its factorization.

1425324221531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53768114 (or 53768107 counting only the distinct ones).

The product of its digits is 57600, while the sum is 35.

Adding to 1425324221531 its reverse (1351224235241), we get a palindrome (2776548456772).

The spelling of 1425324221531 in words is "one trillion, four hundred twenty-five billion, three hundred twenty-four million, two hundred twenty-one thousand, five hundred thirty-one".