13625046401 has 4 divisors (see below), whose sum is σ = 13778136900. Its totient is φ = 13471955904.

The previous prime is 13625046397. The next prime is 13625046403. The reversal of 13625046401 is 10464052631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10464052631 = 13469 ⋅776899.

It can be written as a sum of positive squares in 2 ways, for example, as 9643436401 + 3981610000 = 98201^2 + 63100^2 .

It is a cyclic number.

It is not a de Polignac number, because 13625046401 - 2² = 13625046397 is a prime.

It is a super-4 number, since 4×13625046401⁴ (a number of 42 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13625046403) 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, 76545116 + ... + 76545293.

It is an arithmetic number, because the mean of its divisors is an integer number (3444534225).

Almost surely, 2^13625046401 is an apocalyptic number.

It is an amenable number.

13625046401 is a deficient number, since it is larger than the sum of its proper divisors (153090499).

13625046401 is an equidigital number, since it uses as much as digits as its factorization.

13625046401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153090498.

The product of its (nonzero) digits is 17280, while the sum is 32.

The spelling of 13625046401 in words is "thirteen billion, six hundred twenty-five million, forty-six thousand, four hundred one".