70225931 has 2 divisors, whose sum is σ = 70225932. Its totient is φ = 70225930.

The previous prime is 70225921. The next prime is 70225933. The reversal of 70225931 is 13952207.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 70225931 - 2⁶ = 70225867 is a prime.

It is a super-2 number, since 2×70225931² = 9863362769633522, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 70225933, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 70225894 and 70225903.

It is not a weakly prime, because it can be changed into another prime (70225933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35112965 + 35112966.

It is an arithmetic number, because the mean of its divisors is an integer number (35112966).

Almost surely, 2^70225931 is an apocalyptic number.

70225931 is a deficient number, since it is larger than the sum of its proper divisors (1).

70225931 is an equidigital number, since it uses as much as digits as its factorization.

70225931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 70225931 is about 8380.0913479508. The cubic root of 70225931 is about 412.5714471896.

The spelling of 70225931 in words is "seventy million, two hundred twenty-five thousand, nine hundred thirty-one".