4126525509 has 4 divisors (see below), whose sum is σ = 5502034016. Its totient is φ = 2751017004.

The previous prime is 4126525489. The next prime is 4126525561. The reversal of 4126525509 is 9055256214.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 4126525509 - 2⁵ = 4126525477 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4126525409) 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, 687754249 + ... + 687754254.

It is an arithmetic number, because the mean of its divisors is an integer number (1375508504).

Almost surely, 2^4126525509 is an apocalyptic number.

It is an amenable number.

4126525509 is a deficient number, since it is larger than the sum of its proper divisors (1375508507).

4126525509 is a wasteful number, since it uses less digits than its factorization.

4126525509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1375508506.

The product of its (nonzero) digits is 108000, while the sum is 39.

The square root of 4126525509 is about 64238.0378669835. The cubic root of 4126525509 is about 1603.9648425502.

The spelling of 4126525509 in words is "four billion, one hundred twenty-six million, five hundred twenty-five thousand, five hundred nine".