650125531 has 4 divisors (see below), whose sum is σ = 709227864. Its totient is φ = 591023200.

The previous prime is 650125493. The next prime is 650125549. The reversal of 650125531 is 135521056.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 650125531 - 2¹⁵ = 650092763 is a prime.

It is a super-2 number, since 2×650125531² = 845326412116063922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 650125531.

It is not an unprimeable number, because it can be changed into a prime (650125571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29551150 + ... + 29551171.

It is an arithmetic number, because the mean of its divisors is an integer number (177306966).

Almost surely, 2^650125531 is an apocalyptic number.

650125531 is a deficient number, since it is larger than the sum of its proper divisors (59102333).

650125531 is a wasteful number, since it uses less digits than its factorization.

650125531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59102332.

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 650125531 is about 25497.5593145697. The cubic root of 650125531 is about 866.2948657828.

Adding to 650125531 its reverse (135521056), we get a palindrome (785646587).

The spelling of 650125531 in words is "six hundred fifty million, one hundred twenty-five thousand, five hundred thirty-one".