121525249 has 4 divisors (see below), whose sum is σ = 121558320. Its totient is φ = 121492180.

The previous prime is 121525247. The next prime is 121525291. The reversal of 121525249 is 942525121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121525249 - 2¹ = 121525247 is a prime.

It is a super-2 number, since 2×121525249² = 29536772289024002, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121525249.

It is not an unprimeable number, because it can be changed into a prime (121525247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10219 + ... + 18640.

It is an arithmetic number, because the mean of its divisors is an integer number (30389580).

Almost surely, 2^121525249 is an apocalyptic number.

It is an amenable number.

121525249 is a deficient number, since it is larger than the sum of its proper divisors (33071).

121525249 is an equidigital number, since it uses as much as digits as its factorization.

121525249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33070.

The product of its digits is 7200, while the sum is 31.

The square root of 121525249 is about 11023.8491009266. The cubic root of 121525249 is about 495.3233937485.

The spelling of 121525249 in words is "one hundred twenty-one million, five hundred twenty-five thousand, two hundred forty-nine".