125503289 has 2 divisors, whose sum is σ = 125503290. Its totient is φ = 125503288.

The previous prime is 125503277. The next prime is 125503319. The reversal of 125503289 is 982305521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63361600 + 62141689 = 7960^2 + 7883^2 .

It is a cyclic number.

It is not a de Polignac number, because 125503289 - 2⁸ = 125503033 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (125503219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62751644 + 62751645.

It is an arithmetic number, because the mean of its divisors is an integer number (62751645).

Almost surely, 2^125503289 is an apocalyptic number.

It is an amenable number.

125503289 is a deficient number, since it is larger than the sum of its proper divisors (1).

125503289 is an equidigital number, since it uses as much as digits as its factorization.

125503289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 125503289 is about 11202.8250454963. The cubic root of 125503289 is about 500.6701533876.

The spelling of 125503289 in words is "one hundred twenty-five million, five hundred three thousand, two hundred eighty-nine".