123725389 has 2 divisors, whose sum is σ = 123725390. Its totient is φ = 123725388.

The previous prime is 123725387. The next prime is 123725411. The reversal of 123725389 is 983527321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119137225 + 4588164 = 10915^2 + 2142^2 .

It is a cyclic number.

It is not a de Polignac number, because 123725389 - 2¹ = 123725387 is a prime.

Together with 123725387, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123725387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61862694 + 61862695.

It is an arithmetic number, because the mean of its divisors is an integer number (61862695).

Almost surely, 2^123725389 is an apocalyptic number.

It is an amenable number.

123725389 is a deficient number, since it is larger than the sum of its proper divisors (1).

123725389 is an equidigital number, since it uses as much as digits as its factorization.

123725389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 40.

The square root of 123725389 is about 11123.1914934519. The cubic root of 123725389 is about 498.2947092456.

The spelling of 123725389 in words is "one hundred twenty-three million, seven hundred twenty-five thousand, three hundred eighty-nine".