155212265 has 32 divisors (see below), whose sum is σ = 207446400. Its totient is φ = 110753280.

The previous prime is 155212259. The next prime is 155212289. The reversal of 155212265 is 562212551.

It is not a de Polignac number, because 155212265 - 2⁶ = 155212201 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 370226 + ... + 370644.

It is an arithmetic number, because the mean of its divisors is an integer number (6482700).

Almost surely, 2^155212265 is an apocalyptic number.

It is an amenable number.

155212265 is a deficient number, since it is larger than the sum of its proper divisors (52234135).

155212265 is a wasteful number, since it uses less digits than its factorization.

155212265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617.

The product of its digits is 6000, while the sum is 29.

The square root of 155212265 is about 12458.4214489637. The cubic root of 155212265 is about 537.4136324182.

The spelling of 155212265 in words is "one hundred fifty-five million, two hundred twelve thousand, two hundred sixty-five".