7213725667 has 2 divisors, whose sum is σ = 7213725668. Its totient is φ = 7213725666.

The previous prime is 7213725661. The next prime is 7213725671. The reversal of 7213725667 is 7665273127.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7213725667 is a prime.

It is not a weakly prime, because it can be changed into another prime (7213725661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3606862833 + 3606862834.

It is an arithmetic number, because the mean of its divisors is an integer number (3606862834).

Almost surely, 2^7213725667 is an apocalyptic number.

7213725667 is a deficient number, since it is larger than the sum of its proper divisors (1).

7213725667 is an equidigital number, since it uses as much as digits as its factorization.

7213725667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 740880, while the sum is 46.

The square root of 7213725667 is about 84933.6545016167. The cubic root of 7213725667 is about 1932.2050260400.

The spelling of 7213725667 in words is "seven billion, two hundred thirteen million, seven hundred twenty-five thousand, six hundred sixty-seven".