122421525 has 24 divisors (see below), whose sum is σ = 211206720. Its totient is φ = 62451840.

The previous prime is 122421517. The next prime is 122421527. The reversal of 122421525 is 525124221.

It is not a de Polignac number, because 122421525 - 2³ = 122421517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122421495 and 122421504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122421527) 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, 33760 + ... + 37209.

It is an arithmetic number, because the mean of its divisors is an integer number (8800280).

Almost surely, 2^122421525 is an apocalyptic number.

122421525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

122421525 is a deficient number, since it is larger than the sum of its proper divisors (88785195).

122421525 is a wasteful number, since it uses less digits than its factorization.

122421525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71005 (or 71000 counting only the distinct ones).

The product of its digits is 1600, while the sum is 24.

The square root of 122421525 is about 11064.4261035085. The cubic root of 122421525 is about 496.5381194181.

Adding to 122421525 its reverse (525124221), we get a palindrome (647545746).

The spelling of 122421525 in words is "one hundred twenty-two million, four hundred twenty-one thousand, five hundred twenty-five".