212425531 has 2 divisors, whose sum is σ = 212425532. Its totient is φ = 212425530.

The previous prime is 212425517. The next prime is 212425583. The reversal of 212425531 is 135524212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212425531 - 2⁹ = 212425019 is a prime.

It is a super-2 number, since 2×212425531² = 90249212441263922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212425496 and 212425505.

It is not a weakly prime, because it can be changed into another prime (212425501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106212765 + 106212766.

It is an arithmetic number, because the mean of its divisors is an integer number (106212766).

Almost surely, 2^212425531 is an apocalyptic number.

212425531 is a deficient number, since it is larger than the sum of its proper divisors (1).

212425531 is an equidigital number, since it uses as much as digits as its factorization.

212425531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2400, while the sum is 25.

The square root of 212425531 is about 14574.8252476659. The cubic root of 212425531 is about 596.6718799762.

Adding to 212425531 its reverse (135524212), we get a palindrome (347949743).

The spelling of 212425531 in words is "two hundred twelve million, four hundred twenty-five thousand, five hundred thirty-one".