1540425342452 has 12 divisors (see below), whose sum is σ = 2698405505796. Its totient is φ = 769452340800.

The previous prime is 1540425342427. The next prime is 1540425342457. The reversal of 1540425342452 is 2542435240451.

It can be written as a sum of positive squares in 2 ways, for example, as 4699650916 + 1535725691536 = 68554^2 + 1239244^2 .

It is a super-2 number, since 2×1540425342452² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1540425342457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190078049 + ... + 190086152.

It is an arithmetic number, because the mean of its divisors is an integer number (224867125483).

Almost surely, 2^{1540425342452} is an apocalyptic number.

It is an amenable number.

1540425342452 is a deficient number, since it is larger than the sum of its proper divisors (1157980163344).

1540425342452 is a wasteful number, since it uses less digits than its factorization.

1540425342452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380165218 (or 380165216 counting only the distinct ones).

The product of its (nonzero) digits is 768000, while the sum is 41.

The spelling of 1540425342452 in words is "one trillion, five hundred forty billion, four hundred twenty-five million, three hundred forty-two thousand, four hundred fifty-two".