13531200425 has 6 divisors (see below), whose sum is σ = 16778688558. Its totient is φ = 10824960320.

The previous prime is 13531200409. The next prime is 13531200427. The reversal of 13531200425 is 52400213531.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 882149401 + 12649051024 = 29701^2 + 112468^2 .

It is not a de Polignac number, because 13531200425 - 2⁴ = 13531200409 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13531200394 and 13531200403.

It is not an unprimeable number, because it can be changed into a prime (13531200427) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 270623984 + ... + 270624033.

It is an arithmetic number, because the mean of its divisors is an integer number (2796448093).

Almost surely, 2^13531200425 is an apocalyptic number.

It is an amenable number.

13531200425 is a deficient number, since it is larger than the sum of its proper divisors (3247488133).

13531200425 is an equidigital number, since it uses as much as digits as its factorization.

13531200425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541248027 (or 541248022 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 13531200425 its reverse (52400213531), we get a palindrome (65931413956).

The spelling of 13531200425 in words is "thirteen billion, five hundred thirty-one million, two hundred thousand, four hundred twenty-five".