13125021403 has 8 divisors (see below), whose sum is σ = 14280357728. Its totient is φ = 11990502144.

The previous prime is 13125021379. The next prime is 13125021409. The reversal of 13125021403 is 30412052131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13125021403 - 2⁹ = 13125020891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13125021409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5202951 + ... + 5205472.

It is an arithmetic number, because the mean of its divisors is an integer number (1785044716).

Almost surely, 2^13125021403 is an apocalyptic number.

13125021403 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13125021403 is a deficient number, since it is larger than the sum of its proper divisors (1155336325).

13125021403 is a wasteful number, since it uses less digits than its factorization.

13125021403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10408533.

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 13125021403 its reverse (30412052131), we get a palindrome (43537073534).

The spelling of 13125021403 in words is "thirteen billion, one hundred twenty-five million, twenty-one thousand, four hundred three".