4525391509 has 16 divisors (see below), whose sum is σ = 4716771840. Its totient is φ = 4338174960.

The previous prime is 4525391401. The next prime is 4525391581. The reversal of 4525391509 is 9051935254.

It is a cyclic number.

It is not a de Polignac number, because 4525391509 - 2¹¹ = 4525389461 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4525391599) 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, 2249314 + ... + 2251324.

It is an arithmetic number, because the mean of its divisors is an integer number (294798240).

Almost surely, 2^4525391509 is an apocalyptic number.

It is an amenable number.

4525391509 is a deficient number, since it is larger than the sum of its proper divisors (191380331).

4525391509 is a wasteful number, since it uses less digits than its factorization.

4525391509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3000.

The product of its (nonzero) digits is 243000, while the sum is 43.

The square root of 4525391509 is about 67271.0302359047. The cubic root of 4525391509 is about 1654.0630213190.

The spelling of 4525391509 in words is "four billion, five hundred twenty-five million, three hundred ninety-one thousand, five hundred nine".