1240442401425 has 12 divisors (see below), whose sum is σ = 2050864770480. Its totient is φ = 661569280720.

The previous prime is 1240442401357. The next prime is 1240442401427. The reversal of 1240442401425 is 5241042440421.

It is not a de Polignac number, because 1240442401425 - 2⁹ = 1240442400913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1240442401427) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8269615935 + ... + 8269616084.

It is an arithmetic number, because the mean of its divisors is an integer number (170905397540).

Almost surely, 2^{1240442401425} is an apocalyptic number.

1240442401425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1240442401425 is a deficient number, since it is larger than the sum of its proper divisors (810422369055).

1240442401425 is a wasteful number, since it uses less digits than its factorization.

1240442401425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16539232032 (or 16539232027 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 33.

Adding to 1240442401425 its reverse (5241042440421), we get a palindrome (6481484841846).

The spelling of 1240442401425 in words is "one trillion, two hundred forty billion, four hundred forty-two million, four hundred one thousand, four hundred twenty-five".