13125810 has 16 divisors (see below), whose sum is σ = 31502016. Its totient is φ = 3500208.

The previous prime is 13125799. The next prime is 13125811. The reversal of 13125810 is 1852131.

It is a super-2 number, since 2×13125810² = 344573776312200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13125811) 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, 218734 + ... + 218793.

It is an arithmetic number, because the mean of its divisors is an integer number (1968876).

Almost surely, 2^13125810 is an apocalyptic number.

13125810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13125810 is an abundant number, since it is smaller than the sum of its proper divisors (18376206).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13125810 is a wasteful number, since it uses less digits than its factorization.

13125810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437537.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 13125810 is about 3622.9559754433. The cubic root of 13125810 is about 235.8895514012.

Adding to 13125810 its reverse (1852131), we get a palindrome (14977941).

The spelling of 13125810 in words is "thirteen million, one hundred twenty-five thousand, eight hundred ten".