1225015 has 8 divisors (see below), whose sum is σ = 1603728. Its totient is φ = 890880.

The previous prime is 1225009. The next prime is 1225019. The reversal of 1225015 is 5105221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1225015 - 2⁵ = 1224983 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1225015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11082 + ... + 11191.

It is an arithmetic number, because the mean of its divisors is an integer number (200466).

2^1225015 is an apocalyptic number.

1225015 is a deficient number, since it is larger than the sum of its proper divisors (378713).

1225015 is a wasteful number, since it uses less digits than its factorization.

1225015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22289.

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 1225015 is about 1106.8039573475. The cubic root of 1225015 is about 106.9991847843. Note that the first 3 decimals are identical.

The spelling of 1225015 in words is "one million, two hundred twenty-five thousand, fifteen".