122500025 has 6 divisors (see below), whose sum is σ = 151900062. Its totient is φ = 98000000.

The previous prime is 122500019. The next prime is 122500033. The reversal of 122500025 is 520005221.

It can be written as a sum of positive squares in 3 ways, for example, as 861184 + 121638841 = 928^2 + 11029^2 .

It is not a de Polignac number, because 122500025 - 2⁶ = 122499961 is a prime.

It is a super-2 number, since 2×122500025² = 30012512250001250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122499976 and 122500012.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2449976 + ... + 2450025.

It is an arithmetic number, because the mean of its divisors is an integer number (25316677).

Almost surely, 2^122500025 is an apocalyptic number.

It is an amenable number.

122500025 is a deficient number, since it is larger than the sum of its proper divisors (29400037).

122500025 is an equidigital number, since it uses as much as digits as its factorization.

122500025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4900011 (or 4900006 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 122500025 is about 11067.9729399741. The cubic root of 122500025 is about 496.6442279750.

Adding to 122500025 its reverse (520005221), we get a palindrome (642505246).

The spelling of 122500025 in words is "one hundred twenty-two million, five hundred thousand, twenty-five".