125211403 has 2 divisors, whose sum is σ = 125211404. Its totient is φ = 125211402.

The previous prime is 125211389. The next prime is 125211413. The reversal of 125211403 is 304112521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 125211403 - 2⁵ = 125211371 is a prime.

It is not a weakly prime, because it can be changed into another prime (125211413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62605701 + 62605702.

It is an arithmetic number, because the mean of its divisors is an integer number (62605702).

Almost surely, 2^125211403 is an apocalyptic number.

125211403 is a deficient number, since it is larger than the sum of its proper divisors (1).

125211403 is an equidigital number, since it uses as much as digits as its factorization.

125211403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 125211403 is about 11189.7901231435. The cubic root of 125211403 is about 500.2817119137.

Adding to 125211403 its reverse (304112521), we get a palindrome (429323924).

It can be divided in two parts, 12521 and 1403, that added together give a square (13924 = 118²).

The spelling of 125211403 in words is "one hundred twenty-five million, two hundred eleven thousand, four hundred three".