1553340042025 has 24 divisors (see below), whose sum is σ = 1996243939800. Its totient is φ = 1197603187200.

The previous prime is 1553340042019. The next prime is 1553340042071. The reversal of 1553340042025 is 5202400433551.

It can be written as a sum of positive squares in 12 ways, for example, as 146772505881 + 1406567536144 = 383109^2 + 1185988^2 .

It is not a de Polignac number, because 1553340042025 - 2²⁹ = 1552803171113 is a prime.

It is a super-2 number, since 2×1553340042025² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1587940 + ... + 2372389.

It is an arithmetic number, because the mean of its divisors is an integer number (83176830825).

Almost surely, 2^{1553340042025} is an apocalyptic number.

It is an amenable number.

1553340042025 is a deficient number, since it is larger than the sum of its proper divisors (442903897775).

1553340042025 is a wasteful number, since it uses less digits than its factorization.

1553340042025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3960909 (or 3960904 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 34.

Adding to 1553340042025 its reverse (5202400433551), we get a palindrome (6755740475576).

The spelling of 1553340042025 in words is "one trillion, five hundred fifty-three billion, three hundred forty million, forty-two thousand, twenty-five".