7245455405257 has 8 divisors (see below), whose sum is σ = 7535471926400. Its totient is φ = 6960396431664.

The previous prime is 7245455405231. The next prime is 7245455405263. The reversal of 7245455405257 is 7525045545427.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7245455405257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7245455405198 and 7245455405207.

It is not an unprimeable number, because it can be changed into a prime (7245455405297) 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, 1239383907 + ... + 1239389752.

It is an arithmetic number, because the mean of its divisors is an integer number (941933990800).

Almost surely, 2^{7245455405257} is an apocalyptic number.

It is an amenable number.

7245455405257 is a deficient number, since it is larger than the sum of its proper divisors (290016521143).

7245455405257 is a wasteful number, since it uses less digits than its factorization.

7245455405257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2478773775.

The product of its (nonzero) digits is 39200000, while the sum is 55.

The spelling of 7245455405257 in words is "seven trillion, two hundred forty-five billion, four hundred fifty-five million, four hundred five thousand, two hundred fifty-seven".