121255225 has 24 divisors (see below), whose sum is σ = 185057600. Its totient is φ = 76749120.

The previous prime is 121255223. The next prime is 121255231. The reversal of 121255225 is 522552121.

It is not a de Polignac number, because 121255225 - 2¹ = 121255223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 121255225.

It is not an unprimeable number, because it can be changed into a prime (121255223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24375 + ... + 28924.

Almost surely, 2^121255225 is an apocalyptic number.

It is an amenable number.

121255225 is a deficient number, since it is larger than the sum of its proper divisors (63802375).

121255225 is a wasteful number, since it uses less digits than its factorization.

121255225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53329 (or 53324 counting only the distinct ones).

The product of its digits is 2000, while the sum is 25.

The square root of 121255225 is about 11011.5950252450. The cubic root of 121255225 is about 494.9562591013.

The spelling of 121255225 in words is "one hundred twenty-one million, two hundred fifty-five thousand, two hundred twenty-five".