4340021525 has 12 divisors (see below), whose sum is σ = 6150430752. Its totient is φ = 2976014640.

The previous prime is 4340021509. The next prime is 4340021527. The reversal of 4340021525 is 5251200434.

It is a happy number.

It is not a de Polignac number, because 4340021525 - 2⁴ = 4340021509 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4340021494 and 4340021503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4340021527) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12399887 + ... + 12400236.

It is an arithmetic number, because the mean of its divisors is an integer number (512535896).

Almost surely, 2^4340021525 is an apocalyptic number.

It is an amenable number.

4340021525 is a deficient number, since it is larger than the sum of its proper divisors (1810409227).

4340021525 is a wasteful number, since it uses less digits than its factorization.

4340021525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24800140 (or 24800135 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 4340021525 is about 65878.8397362917. The cubic root of 4340021525 is about 1631.1627475926.

Adding to 4340021525 its reverse (5251200434), we get a palindrome (9591221959).

The spelling of 4340021525 in words is "four billion, three hundred forty million, twenty-one thousand, five hundred twenty-five".