1205242001425 has 48 divisors (see below), whose sum is σ = 1864867497984. Its totient is φ = 750676680000.

The previous prime is 1205242001357. The next prime is 1205242001449. The reversal of 1205242001425 is 5241002425021.

It is a happy number.

It is not a de Polignac number, because 1205242001425 - 2⁷ = 1205242001297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1205242001393 and 1205242001402.

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, 1986840 + ... + 2521510.

It is an arithmetic number, because the mean of its divisors is an integer number (38851406208).

Almost surely, 2^{1205242001425} is an apocalyptic number.

It is an amenable number.

1205242001425 is a deficient number, since it is larger than the sum of its proper divisors (659625496559).

1205242001425 is a wasteful number, since it uses less digits than its factorization.

1205242001425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535870 (or 535865 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 28.

Adding to 1205242001425 its reverse (5241002425021), we get a palindrome (6446244426446).

The spelling of 1205242001425 in words is "one trillion, two hundred five billion, two hundred forty-two million, one thousand, four hundred twenty-five".