7421125331 has 2 divisors, whose sum is σ = 7421125332. Its totient is φ = 7421125330.

The previous prime is 7421125321. The next prime is 7421125343. The reversal of 7421125331 is 1335211247.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7421125331 - 2¹⁸ = 7420863187 is a prime.

It is a super-2 number, since 2×7421125331² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7421125294 and 7421125303.

It is not a weakly prime, because it can be changed into another prime (7421125321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3710562665 + 3710562666.

It is an arithmetic number, because the mean of its divisors is an integer number (3710562666).

Almost surely, 2^7421125331 is an apocalyptic number.

7421125331 is a deficient number, since it is larger than the sum of its proper divisors (1).

7421125331 is an equidigital number, since it uses as much as digits as its factorization.

7421125331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 29.

The square root of 7421125331 is about 86145.9536542489. The cubic root of 7421125331 is about 1950.5477602975.

Adding to 7421125331 its reverse (1335211247), we get a palindrome (8756336578).

The spelling of 7421125331 in words is "seven billion, four hundred twenty-one million, one hundred twenty-five thousand, three hundred thirty-one".