121254202542425 has 6 divisors (see below), whose sum is σ = 150355211152638. Its totient is φ = 97003362033920.

The previous prime is 121254202542331. The next prime is 121254202542443. The reversal of 121254202542425 is 524245202452121.

It can be written as a sum of positive squares in 3 ways, for example, as 40481418975001 + 80772783567424 = 6362501^2 + 8987368^2 .

It is not a de Polignac number, because 121254202542425 - 2¹⁶ = 121254202476889 is a prime.

It is a Duffinian number.

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, 2425084050824 + ... + 2425084050873.

It is an arithmetic number, because the mean of its divisors is an integer number (25059201858773).

Almost surely, 2^{121254202542425} is an apocalyptic number.

It is an amenable number.

121254202542425 is a deficient number, since it is larger than the sum of its proper divisors (29101008610213).

121254202542425 is an equidigital number, since it uses as much as digits as its factorization.

121254202542425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4850168101707 (or 4850168101702 counting only the distinct ones).

The product of its (nonzero) digits is 512000, while the sum is 41.

Adding to 121254202542425 its reverse (524245202452121), we get a palindrome (645499404994546).

The spelling of 121254202542425 in words is "one hundred twenty-one trillion, two hundred fifty-four billion, two hundred two million, five hundred forty-two thousand, four hundred twenty-five".