65725530 has 32 divisors (see below), whose sum is σ = 169876224. Its totient is φ = 16178496.

The previous prime is 65725529. The next prime is 65725537. The reversal of 65725530 is 3552756.

It is a junction number, because it is equal to n+sod(n) for n = 65725491 and 65725500.

It is not an unprimeable number, because it can be changed into a prime (65725537) 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, 83874 + ... + 84653.

It is an arithmetic number, because the mean of its divisors is an integer number (5308632).

Almost surely, 2^65725530 is an apocalyptic number.

65725530 is an abundant number, since it is smaller than the sum of its proper divisors (104150694).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65725530 is a wasteful number, since it uses less digits than its factorization.

65725530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168550.

The product of its (nonzero) digits is 31500, while the sum is 33.

The square root of 65725530 is about 8107.1283448580. The cubic root of 65725530 is about 403.5630221147.

The spelling of 65725530 in words is "sixty-five million, seven hundred twenty-five thousand, five hundred thirty".