1225615 has 8 divisors (see below), whose sum is σ = 1557360. Its totient is φ = 922752.

The previous prime is 1225603. The next prime is 1225621. The reversal of 1225615 is 5165221.

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 1225615 - 2¹³ = 1217423 is a prime.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7125 + ... + 7294.

It is an arithmetic number, because the mean of its divisors is an integer number (194670).

2^1225615 is an apocalyptic number.

1225615 is a deficient number, since it is larger than the sum of its proper divisors (331745).

1225615 is a wasteful number, since it uses less digits than its factorization.

1225615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14441.

The product of its digits is 600, while the sum is 22.

The square root of 1225615 is about 1107.0749748775. The cubic root of 1225615 is about 107.0166509738.

The spelling of 1225615 in words is "one million, two hundred twenty-five thousand, six hundred fifteen".