120265565 has 16 divisors (see below), whose sum is σ = 174638592. Its totient is φ = 77616384.

The previous prime is 120265549. The next prime is 120265567. The reversal of 120265565 is 565562021.

It is a cyclic number.

It is not a de Polignac number, because 120265565 - 2⁴ = 120265549 is a prime.

It is a super-2 number, since 2×120265565² = 28927612249538450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120265567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100469 + ... + 101658.

It is an arithmetic number, because the mean of its divisors is an integer number (10914912).

Almost surely, 2^120265565 is an apocalyptic number.

It is an amenable number.

120265565 is a deficient number, since it is larger than the sum of its proper divisors (54373027).

120265565 is a wasteful number, since it uses less digits than its factorization.

120265565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202156.

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 120265565 is about 10966.5657796778. The cubic root of 120265565 is about 493.6060021252.

The spelling of 120265565 in words is "one hundred twenty million, two hundred sixty-five thousand, five hundred sixty-five".