1015542142225 has 48 divisors (see below), whose sum is σ = 1394606333232. Its totient is φ = 728719580160.

The previous prime is 1015542142081. The next prime is 1015542142261. The reversal of 1015542142225 is 5222412455101.

It can be written as a sum of positive squares in 24 ways, for example, as 892284273664 + 123257868561 = 944608^2 + 351081^2 .

It is not a de Polignac number, because 1015542142225 - 2¹⁷ = 1015542011153 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9240699 + ... + 9349951.

It is an arithmetic number, because the mean of its divisors is an integer number (29054298609).

Almost surely, 2^{1015542142225} is an apocalyptic number.

It is an amenable number.

1015542142225 is a deficient number, since it is larger than the sum of its proper divisors (379064191007).

1015542142225 is a wasteful number, since it uses less digits than its factorization.

1015542142225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110086 (or 110081 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 34.

Adding to 1015542142225 its reverse (5222412455101), we get a palindrome (6237954597326).

The spelling of 1015542142225 in words is "one trillion, fifteen billion, five hundred forty-two million, one hundred forty-two thousand, two hundred twenty-five".