667525123 has 2 divisors, whose sum is σ = 667525124. Its totient is φ = 667525122.

The previous prime is 667525109. The next prime is 667525127. The reversal of 667525123 is 321525766.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 667525123 - 2⁵ = 667525091 is a prime.

It is not a weakly prime, because it can be changed into another prime (667525127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333762561 + 333762562.

It is an arithmetic number, because the mean of its divisors is an integer number (333762562).

Almost surely, 2^667525123 is an apocalyptic number.

667525123 is a deficient number, since it is larger than the sum of its proper divisors (1).

667525123 is an equidigital number, since it uses as much as digits as its factorization.

667525123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75600, while the sum is 37.

The square root of 667525123 is about 25836.5075619752. The cubic root of 667525123 is about 873.9552692470.

The spelling of 667525123 in words is "six hundred sixty-seven million, five hundred twenty-five thousand, one hundred twenty-three".