1345425521499 has 24 divisors (see below), whose sum is σ = 1965460442400. Its totient is φ = 886767488640.

The previous prime is 1345425521411. The next prime is 1345425521509. The reversal of 1345425521499 is 9941255245431.

1345425521499 is a `hidden beast` number, since 1 + 3 + 4 + 5 + 4 + 25 + 521 + 4 + 99 = 666.

It is not a de Polignac number, because 1345425521499 - 2⁷ = 1345425521371 is a prime.

It is a super-3 number, since 3×1345425521499³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (1345425529499) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7002882 + ... + 7192440.

It is an arithmetic number, because the mean of its divisors is an integer number (81894185100).

Almost surely, 2^{1345425521499} is an apocalyptic number.

1345425521499 is a deficient number, since it is larger than the sum of its proper divisors (620034920901).

1345425521499 is a wasteful number, since it uses less digits than its factorization.

1345425521499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198515 (or 198512 counting only the distinct ones).

The product of its digits is 7776000, while the sum is 54.

The spelling of 1345425521499 in words is "one trillion, three hundred forty-five billion, four hundred twenty-five million, five hundred twenty-one thousand, four hundred ninety-nine".