61535525 has 12 divisors (see below), whose sum is σ = 77599200. Its totient is φ = 48392880.

The previous prime is 61535503. The next prime is 61535531. The reversal of 61535525 is 52553516.

61535525 = 4528² + 4529² + 4530².

It is not a de Polignac number, because 61535525 - 2⁸ = 61535269 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61535491 and 61535500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19385 + ... + 22334.

It is an arithmetic number, because the mean of its divisors is an integer number (6466600).

Almost surely, 2^61535525 is an apocalyptic number.

It is an amenable number.

61535525 is a deficient number, since it is larger than the sum of its proper divisors (16063675).

61535525 is a wasteful number, since it uses less digits than its factorization.

61535525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41788 (or 41783 counting only the distinct ones).

The product of its digits is 22500, while the sum is 32.

The square root of 61535525 is about 7844.4582349580. The cubic root of 61535525 is about 394.7983267890.

Subtracting from 61535525 its reverse (52553516), we obtain a square (8982009 = 2997²).

The spelling of 61535525 in words is "sixty-one million, five hundred thirty-five thousand, five hundred twenty-five".