425120015 has 4 divisors (see below), whose sum is σ = 510144024. Its totient is φ = 340096008.

The previous prime is 425120011. The next prime is 425120023. The reversal of 425120015 is 510021524.

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

It is a cyclic number.

It is not a de Polignac number, because 425120015 - 2² = 425120011 is a prime.

It is a super-3 number, since 3×425120015³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425120011) 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, 42511997 + ... + 42512006.

It is an arithmetic number, because the mean of its divisors is an integer number (127536006).

Almost surely, 2^425120015 is an apocalyptic number.

425120015 is a deficient number, since it is larger than the sum of its proper divisors (85024009).

425120015 is an equidigital number, since it uses as much as digits as its factorization.

425120015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85024008.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 425120015 is about 20618.4387139279. The cubic root of 425120015 is about 751.9180623858.

Adding to 425120015 its reverse (510021524), we get a palindrome (935141539).

The spelling of 425120015 in words is "four hundred twenty-five million, one hundred twenty thousand, fifteen".