13523400425 has 12 divisors (see below), whose sum is σ = 16805406156. Its totient is φ = 10795243200.

The previous prime is 13523400419. The next prime is 13523400427. The reversal of 13523400425 is 52400432531.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 721835689 + 12801564736 = 26867^2 + 113144^2 .

It is not a de Polignac number, because 13523400425 - 2⁴ = 13523400409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13523400427) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 575174 + ... + 598223.

It is an arithmetic number, because the mean of its divisors is an integer number (1400450513).

Almost surely, 2^13523400425 is an apocalyptic number.

It is an amenable number.

13523400425 is a deficient number, since it is larger than the sum of its proper divisors (3282005731).

13523400425 is a wasteful number, since it uses less digits than its factorization.

13523400425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1173868 (or 1173863 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 13523400425 its reverse (52400432531), we get a palindrome (65923832956).

The spelling of 13523400425 in words is "thirteen billion, five hundred twenty-three million, four hundred thousand, four hundred twenty-five".