125403263 has 4 divisors (see below), whose sum is σ = 125492208. Its totient is φ = 125314320.

The previous prime is 125403241. The next prime is 125403281. The reversal of 125403263 is 362304521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 362304521 = 19 ⋅19068659.

It is a cyclic number.

It is not a de Polignac number, because 125403263 - 2¹⁶ = 125337727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125403563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42323 + ... + 45188.

It is an arithmetic number, because the mean of its divisors is an integer number (31373052).

Almost surely, 2^125403263 is an apocalyptic number.

125403263 is a deficient number, since it is larger than the sum of its proper divisors (88945).

125403263 is an equidigital number, since it uses as much as digits as its factorization.

125403263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88944.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 125403263 is about 11198.3598352616. The cubic root of 125403263 is about 500.5371068259.

Adding to 125403263 its reverse (362304521), we get a palindrome (487707784).

The spelling of 125403263 in words is "one hundred twenty-five million, four hundred three thousand, two hundred sixty-three".