13251251457 has 12 divisors (see below), whose sum is σ = 19849611600. Its totient is φ = 8834167476.

The previous prime is 13251251449. The next prime is 13251251459. The reversal of 13251251457 is 75415215231.

13251251457 is a `hidden beast` number, since 132 + 5 + 1 + 2 + 514 + 5 + 7 = 666.

It is not a de Polignac number, because 13251251457 - 2³ = 13251251449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13251251459) 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, 27265707 + ... + 27266192.

It is an arithmetic number, because the mean of its divisors is an integer number (1654134300).

Almost surely, 2^13251251457 is an apocalyptic number.

It is an amenable number.

13251251457 is a deficient number, since it is larger than the sum of its proper divisors (6598360143).

13251251457 is an frugal number, since it uses more digits than its factorization.

13251251457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54531914 (or 54531902 counting only the distinct ones).

The product of its digits is 42000, while the sum is 36.

Adding to 13251251457 its reverse (75415215231), we get a palindrome (88666466688).

The spelling of 13251251457 in words is "thirteen billion, two hundred fifty-one million, two hundred fifty-one thousand, four hundred fifty-seven".