12500535401 has 4 divisors (see below), whose sum is σ = 12504311892. Its totient is φ = 12496758912.

The previous prime is 12500535367. The next prime is 12500535407. The reversal of 12500535401 is 10453500521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12011064025 + 489471376 = 109595^2 + 22124^2 .

It is a cyclic number.

It is not a de Polignac number, because 12500535401 - 2¹⁸ = 12500273257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12500535407) 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, 1883276 + ... + 1889901.

It is an arithmetic number, because the mean of its divisors is an integer number (3126077973).

Almost surely, 2^12500535401 is an apocalyptic number.

It is an amenable number.

12500535401 is a deficient number, since it is larger than the sum of its proper divisors (3776491).

12500535401 is an equidigital number, since it uses as much as digits as its factorization.

12500535401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3776490.

The product of its (nonzero) digits is 3000, while the sum is 26.

The spelling of 12500535401 in words is "twelve billion, five hundred million, five hundred thirty-five thousand, four hundred one".