650425129 has 4 divisors (see below), whose sum is σ = 654018820. Its totient is φ = 646831440.

The previous prime is 650425093. The next prime is 650425147. The reversal of 650425129 is 921524056.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 74425129 + 576000000 = 8627^2 + 24000^2 .

It is a cyclic number.

It is not a de Polignac number, because 650425129 - 2¹⁹ = 649900841 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 650425094 and 650425103.

It is not an unprimeable number, because it can be changed into a prime (650425199) 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, 1796574 + ... + 1796935.

It is an arithmetic number, because the mean of its divisors is an integer number (163504705).

Almost surely, 2^650425129 is an apocalyptic number.

It is an amenable number.

650425129 is a deficient number, since it is larger than the sum of its proper divisors (3593691).

650425129 is a wasteful number, since it uses less digits than its factorization.

650425129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3593690.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 650425129 is about 25503.4336707825. The cubic root of 650425129 is about 866.4279171906.

The spelling of 650425129 in words is "six hundred fifty million, four hundred twenty-five thousand, one hundred twenty-nine".