123525221 has 2 divisors, whose sum is σ = 123525222. Its totient is φ = 123525220.

The previous prime is 123525163. The next prime is 123525229. The reversal of 123525221 is 122525321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123520996 + 4225 = 11114^2 + 65^2 .

It is a cyclic number.

It is not a de Polignac number, because 123525221 - 2¹⁰ = 123524197 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123525229) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61762610 + 61762611.

It is an arithmetic number, because the mean of its divisors is an integer number (61762611).

Almost surely, 2^123525221 is an apocalyptic number.

It is an amenable number.

123525221 is a deficient number, since it is larger than the sum of its proper divisors (1).

123525221 is an equidigital number, since it uses as much as digits as its factorization.

123525221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1200, while the sum is 23.

The square root of 123525221 is about 11114.1900739550. The cubic root of 123525221 is about 498.0258436721.

The spelling of 123525221 in words is "one hundred twenty-three million, five hundred twenty-five thousand, two hundred twenty-one".