1345621041525 has 48 divisors (see below), whose sum is σ = 2324039823360. Its totient is φ = 685707422400.

The previous prime is 1345621041497. The next prime is 1345621041547. The reversal of 1345621041525 is 5251401265431.

It is not a de Polignac number, because 1345621041525 - 2⁹ = 1345621041013 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1143336 + ... + 1999614.

It is an arithmetic number, because the mean of its divisors is an integer number (48417496320).

Almost surely, 2^{1345621041525} is an apocalyptic number.

1345621041525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1345621041525 is a deficient number, since it is larger than the sum of its proper divisors (978418781835).

1345621041525 is a wasteful number, since it uses less digits than its factorization.

1345621041525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857226 (or 857221 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 39.

The spelling of 1345621041525 in words is "one trillion, three hundred forty-five billion, six hundred twenty-one million, forty-one thousand, five hundred twenty-five".