122520425 has 12 divisors (see below), whose sum is σ = 158531520. Its totient is φ = 93754320.

The previous prime is 122520413. The next prime is 122520427. The reversal of 122520425 is 524025221.

It is not a de Polignac number, because 122520425 - 2¹⁰ = 122519401 is a prime.

It is a super-2 number, since 2×122520425² = 30022509084361250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a self number, because there is not a number n which added to its sum of digits gives 122520425.

It is not an unprimeable number, because it can be changed into a prime (122520427) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 105965 + ... + 107114.

It is an arithmetic number, because the mean of its divisors is an integer number (13210960).

Almost surely, 2^122520425 is an apocalyptic number.

It is an amenable number.

122520425 is a deficient number, since it is larger than the sum of its proper divisors (36011095).

122520425 is a wasteful number, since it uses less digits than its factorization.

122520425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213112 (or 213107 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 122520425 is about 11068.8944795765. The cubic root of 122520425 is about 496.6717952616.

Adding to 122520425 its reverse (524025221), we get a palindrome (646545646).

The spelling of 122520425 in words is "one hundred twenty-two million, five hundred twenty thousand, four hundred twenty-five".