13642525 has 18 divisors (see below), whose sum is σ = 18323790. Its totient is φ = 10071360.

The previous prime is 13642523. The next prime is 13642537. The reversal of 13642525 is 52524631.

It can be written as a sum of positive squares in 9 ways, for example, as 9998244 + 3644281 = 3162^2 + 1909^2 .

It is not a de Polignac number, because 13642525 - 2¹ = 13642523 is a prime.

It is a super-2 number, since 2×13642525² = 372236976751250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13642493 and 13642502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13642523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2611 + ... + 5839.

Almost surely, 2^13642525 is an apocalyptic number.

It is an amenable number.

13642525 is a deficient number, since it is larger than the sum of its proper divisors (4681265).

13642525 is a wasteful number, since it uses less digits than its factorization.

13642525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3265 (or 3247 counting only the distinct ones).

The product of its digits is 7200, while the sum is 28.

The square root of 13642525 is about 3693.5788877456. The cubic root of 13642525 is about 238.9451681196.

The spelling of 13642525 in words is "thirteen million, six hundred forty-two thousand, five hundred twenty-five".