122405025 has 24 divisors (see below), whose sum is σ = 202935424. Its totient is φ = 65102400.

The previous prime is 122405021. The next prime is 122405071. The reversal of 122405025 is 520504221.

It is a happy number.

It is not a de Polignac number, because 122405025 - 2² = 122405021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122404992 and 122405010.

It is not an unprimeable number, because it can be changed into a prime (122405021) 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, 27720 + ... + 31830.

Almost surely, 2^122405025 is an apocalyptic number.

122405025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

122405025 is a deficient number, since it is larger than the sum of its proper divisors (80530399).

122405025 is a wasteful number, since it uses less digits than its factorization.

122405025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4521 (or 4516 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 122405025 is about 11063.6804454937. The cubic root of 122405025 is about 496.5158105769.

Adding to 122405025 its reverse (520504221), we get a palindrome (642909246).

The spelling of 122405025 in words is "one hundred twenty-two million, four hundred five thousand, twenty-five".