1540390025014 has 32 divisors (see below), whose sum is σ = 2477869833600. Its totient is φ = 715653471360.

The previous prime is 1540390024973. The next prime is 1540390025021. The reversal of 1540390025014 is 4105200930451.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64492 + ... + 1756399.

It is an arithmetic number, because the mean of its divisors is an integer number (77433432300).

Almost surely, 2^{1540390025014} is an apocalyptic number.

1540390025014 is a deficient number, since it is larger than the sum of its proper divisors (937479808586).

1540390025014 is a wasteful number, since it uses less digits than its factorization.

1540390025014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1821228.

The product of its (nonzero) digits is 21600, while the sum is 34.

Adding to 1540390025014 its reverse (4105200930451), we get a palindrome (5645590955465).

The spelling of 1540390025014 in words is "one trillion, five hundred forty billion, three hundred ninety million, twenty-five thousand, fourteen".