1255615 has 8 divisors (see below), whose sum is σ = 1586160. Its totient is φ = 951552.

The previous prime is 1255609. The next prime is 1255619. The reversal of 1255615 is 5165521.

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

It is a cyclic number.

It is not a de Polignac number, because 1255615 - 2⁹ = 1255103 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1255615.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6514 + ... + 6703.

It is an arithmetic number, because the mean of its divisors is an integer number (198270).

2^1255615 is an apocalyptic number.

1255615 is a deficient number, since it is larger than the sum of its proper divisors (330545).

1255615 is a wasteful number, since it uses less digits than its factorization.

1255615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13241.

The product of its digits is 1500, while the sum is 25.

The square root of 1255615 is about 1120.5422794344. The cubic root of 1255615 is about 107.8827889334.

The spelling of 1255615 in words is "one million, two hundred fifty-five thousand, six hundred fifteen".