4215665125 has 32 divisors (see below), whose sum is σ = 6102570240. Its totient is φ = 2847556800.

The previous prime is 4215665119. The next prime is 4215665131. The reversal of 4215665125 is 5215665124.

It is an interprime number because it is at equal distance from previous prime (4215665119) and next prime (4215665131).

It is not a de Polignac number, because 4215665125 - 2⁹ = 4215664613 is a prime.

It is a super-2 number, since 2×4215665125² = 35543664892282531250, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22671 + ... + 94579.

It is an arithmetic number, because the mean of its divisors is an integer number (190705320).

Almost surely, 2^4215665125 is an apocalyptic number.

It is an amenable number.

4215665125 is a deficient number, since it is larger than the sum of its proper divisors (1886905115).

4215665125 is an equidigital number, since it uses as much as digits as its factorization.

4215665125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71998 (or 71988 counting only the distinct ones).

The product of its digits is 72000, while the sum is 37.

The square root of 4215665125 is about 64928.1535622260. The cubic root of 4215665125 is about 1615.4320748673.

Subtracting 4215665125 from its reverse (5215665124), we obtain a palindrome (999999999).

The spelling of 4215665125 in words is "four billion, two hundred fifteen million, six hundred sixty-five thousand, one hundred twenty-five".