61532525253 has 16 divisors (see below), whose sum is σ = 87215558976. Its totient is φ = 38454816000.

The previous prime is 61532525191. The next prime is 61532525267. The reversal of 61532525253 is 35252523516.

It is a happy number.

It is not a de Polignac number, because 61532525253 - 2⁹ = 61532524741 is a prime.

It is a super-2 number, since 2×61532525253² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61582525253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2390626 + ... + 2416227.

It is an arithmetic number, because the mean of its divisors is an integer number (5450972436).

Almost surely, 2^61532525253 is an apocalyptic number.

It is an amenable number.

61532525253 is a deficient number, since it is larger than the sum of its proper divisors (25683033723).

61532525253 is a wasteful number, since it uses less digits than its factorization.

61532525253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4807124.

The product of its digits is 270000, while the sum is 39.

The spelling of 61532525253 in words is "sixty-one billion, five hundred thirty-two million, five hundred twenty-five thousand, two hundred fifty-three".