7918425 has 24 divisors (see below), whose sum is σ = 14547680. Its totient is φ = 4222800.

The previous prime is 7918411. The next prime is 7918429. The reversal of 7918425 is 5248197.

It is not a de Polignac number, because 7918425 - 2¹⁰ = 7917401 is a prime.

It is an Ulam number.

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 7918425.

It is not an unprimeable number, because it can be changed into a prime (7918429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5191 + ... + 6540.

Almost surely, 2^7918425 is an apocalyptic number.

7918425 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

7918425 is a deficient number, since it is larger than the sum of its proper divisors (6629255).

7918425 is a wasteful number, since it uses less digits than its factorization.

7918425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11750 (or 11739 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 7918425 is about 2813.9696160407. The cubic root of 7918425 is about 199.3178845708.

It can be divided in two parts, 791 and 8425, that added together give a square (9216 = 96²).

The spelling of 7918425 in words is "seven million, nine hundred eighteen thousand, four hundred twenty-five".