1254452544521 has 6 divisors (see below), whose sum is σ = 1378861061466. Its totient is φ = 1140411404000.

The previous prime is 1254452544493. The next prime is 1254452544589.

1254452544521 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 866835481600 + 387617062921 = 931040^2 + 622589^2 .

It is not a de Polignac number, because 1254452544521 - 2²⁶ = 1254385435657 is a prime.

It is a super-2 number, since 2×1254452544521² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1254452504521) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5183688080 + ... + 5183688321.

It is an arithmetic number, because the mean of its divisors is an integer number (229810176911).

Almost surely, 2^{1254452544521} is an apocalyptic number.

1254452544521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1254452544521 is a deficient number, since it is larger than the sum of its proper divisors (124408516945).

1254452544521 is a wasteful number, since it uses less digits than its factorization.

1254452544521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10367376423 (or 10367376412 counting only the distinct ones).

The product of its digits is 1280000, while the sum is 44.

The spelling of 1254452544521 in words is "one trillion, two hundred fifty-four billion, four hundred fifty-two million, five hundred forty-four thousand, five hundred twenty-one".