13242400525 has 6 divisors (see below), whose sum is σ = 16420576682. Its totient is φ = 10593920400.

The previous prime is 13242400519. The next prime is 13242400547. The reversal of 13242400525 is 52500424231.

It can be written as a sum of positive squares in 3 ways, for example, as 908299044 + 12334101481 = 30138^2 + 111059^2 .

It is not a de Polignac number, because 13242400525 - 2¹⁵ = 13242367757 is a prime.

It is a super-2 number, since 2×13242400525² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13242400493 and 13242400502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 264847986 + ... + 264848035.

Almost surely, 2^13242400525 is an apocalyptic number.

It is an amenable number.

13242400525 is a deficient number, since it is larger than the sum of its proper divisors (3178176157).

13242400525 is an equidigital number, since it uses as much as digits as its factorization.

13242400525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529696031 (or 529696026 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 13242400525 its reverse (52500424231), we get a palindrome (65742824756).

The spelling of 13242400525 in words is "thirteen billion, two hundred forty-two million, four hundred thousand, five hundred twenty-five".