125404052403 has 32 divisors (see below), whose sum is σ = 197576478720. Its totient is φ = 69235246080.

The previous prime is 125404052399. The next prime is 125404052413. The reversal of 125404052403 is 304250404521.

It is not a de Polignac number, because 125404052403 - 2² = 125404052399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125404052413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 245563 + ... + 557771.

It is an arithmetic number, because the mean of its divisors is an integer number (6174264960).

Almost surely, 2^125404052403 is an apocalyptic number.

125404052403 is a deficient number, since it is larger than the sum of its proper divisors (72172426317).

125404052403 is a wasteful number, since it uses less digits than its factorization.

125404052403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312867.

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 125404052403 its reverse (304250404521), we get a palindrome (429654456924).

The spelling of 125404052403 in words is "one hundred twenty-five billion, four hundred four million, fifty-two thousand, four hundred three".