245400253242521 has 8 divisors (see below), whose sum is σ = 270423177097920. Its totient is φ = 221255326715472.

The previous prime is 245400253242511. The next prime is 245400253242569. The reversal of 245400253242521 is 125242352004542.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 245400253242521 - 2⁶ = 245400253242457 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (245400253242511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219499331501 + ... + 219499332618.

It is an arithmetic number, because the mean of its divisors is an integer number (33802897137240).

Almost surely, 2^{245400253242521} is an apocalyptic number.

It is an amenable number.

245400253242521 is a deficient number, since it is larger than the sum of its proper divisors (25022923855399).

245400253242521 is a wasteful number, since it uses less digits than its factorization.

245400253242521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438998664175.

The product of its (nonzero) digits is 768000, while the sum is 41.

The spelling of 245400253242521 in words is "two hundred forty-five trillion, four hundred billion, two hundred fifty-three million, two hundred forty-two thousand, five hundred twenty-one".