125523403 has 2 divisors, whose sum is σ = 125523404. Its totient is φ = 125523402.

The previous prime is 125523389. The next prime is 125523439. The reversal of 125523403 is 304325521.

It is a weak prime.

It is an emirp because it is prime and its reverse (304325521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125523403 - 2¹⁷ = 125392331 is a prime.

It is a super-2 number, since 2×125523403² = 31512249401400818, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (125523703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62761701 + 62761702.

It is an arithmetic number, because the mean of its divisors is an integer number (62761702).

Almost surely, 2^125523403 is an apocalyptic number.

125523403 is a deficient number, since it is larger than the sum of its proper divisors (1).

125523403 is an equidigital number, since it uses as much as digits as its factorization.

125523403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 125523403 is about 11203.7227295216. The cubic root of 125523403 is about 500.6968988793.

Adding to 125523403 its reverse (304325521), we get a palindrome (429848924).

The spelling of 125523403 in words is "one hundred twenty-five million, five hundred twenty-three thousand, four hundred three".