1265615 has 8 divisors (see below), whose sum is σ = 1635648. Its totient is φ = 934560.

The previous prime is 1265611. The next prime is 1265617. The reversal of 1265615 is 5165621.

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

It is not a de Polignac number, because 1265615 - 2² = 1265611 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1265611) 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, 9671 + ... + 9800.

It is an arithmetic number, because the mean of its divisors is an integer number (204456).

2^1265615 is an apocalyptic number.

1265615 is a deficient number, since it is larger than the sum of its proper divisors (370033).

1265615 is a wasteful number, since it uses less digits than its factorization.

1265615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19489.

The product of its digits is 1800, while the sum is 26.

The square root of 1265615 is about 1124.9955555468. The cubic root of 1265615 is about 108.1684328835.

The spelling of 1265615 in words is "one million, two hundred sixty-five thousand, six hundred fifteen".