121524125 has 16 divisors (see below), whose sum is σ = 152096880. Its totient is φ = 96940800.

The previous prime is 121524121. The next prime is 121524127. The reversal of 121524125 is 521425121.

It can be written as a sum of positive squares in 8 ways, for example, as 19695844 + 101828281 = 4438^2 + 10091^2 .

It is not a de Polignac number, because 121524125 - 2² = 121524121 is a prime.

It is a super-2 number, since 2×121524125² = 29536225914031250, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 121524125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121524121) 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, 49937 + ... + 52313.

It is an arithmetic number, because the mean of its divisors is an integer number (9506055).

Almost surely, 2^121524125 is an apocalyptic number.

It is an amenable number.

121524125 is a deficient number, since it is larger than the sum of its proper divisors (30572755).

121524125 is an equidigital number, since it uses as much as digits as its factorization.

121524125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2801 (or 2791 counting only the distinct ones).

The product of its digits is 800, while the sum is 23.

The square root of 121524125 is about 11023.7981204302. The cubic root of 121524125 is about 495.3218666441.

Adding to 121524125 its reverse (521425121), we get a palindrome (642949246).

The spelling of 121524125 in words is "one hundred twenty-one million, five hundred twenty-four thousand, one hundred twenty-five".