121652620025 has 12 divisors (see below), whose sum is σ = 158788683600. Its totient is φ = 92199880080.

The previous prime is 121652620021. The next prime is 121652620039. The reversal of 121652620025 is 520026256121.

It is not a de Polignac number, because 121652620025 - 2² = 121652620021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121652619973 and 121652620000.

It is not an unprimeable number, because it can be changed into a prime (121652620021) 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, 128054915 + ... + 128055864.

It is an arithmetic number, because the mean of its divisors is an integer number (13232390300).

Almost surely, 2^121652620025 is an apocalyptic number.

It is an amenable number.

121652620025 is a deficient number, since it is larger than the sum of its proper divisors (37136063575).

121652620025 is a wasteful number, since it uses less digits than its factorization.

121652620025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256110808 (or 256110803 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

Adding to 121652620025 its reverse (520026256121), we get a palindrome (641678876146).

The spelling of 121652620025 in words is "one hundred twenty-one billion, six hundred fifty-two million, six hundred twenty thousand, twenty-five".