121610425 has 6 divisors (see below), whose sum is σ = 150796958. Its totient is φ = 97288320.

The previous prime is 121610413. The next prime is 121610443. The reversal of 121610425 is 524016121.

It can be written as a sum of positive squares in 3 ways, for example, as 16670889 + 104939536 = 4083^2 + 10244^2 .

It is not a de Polignac number, because 121610425 - 2⁷ = 121610297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121610396 and 121610405.

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, 2432184 + ... + 2432233.

Almost surely, 2^121610425 is an apocalyptic number.

It is an amenable number.

121610425 is a deficient number, since it is larger than the sum of its proper divisors (29186533).

121610425 is an equidigital number, since it uses as much as digits as its factorization.

121610425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4864427 (or 4864422 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 121610425 is about 11027.7116846606. The cubic root of 121610425 is about 495.4390893557.

Adding to 121610425 its reverse (524016121), we get a palindrome (645626546).

The spelling of 121610425 in words is "one hundred twenty-one million, six hundred ten thousand, four hundred twenty-five".