1415521261225 has 24 divisors (see below), whose sum is σ = 1804190642712. Its totient is φ = 1101218227200.

The previous prime is 1415521261213. The next prime is 1415521261243. The reversal of 1415521261225 is 5221621255141.

It can be written as a sum of positive squares in 12 ways, for example, as 224157743209 + 1191363518016 = 473453^2 + 1091496^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1415521261225 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 23 ways as a sum of consecutive naturals, for example, 4577346 + ... + 4876795.

It is an arithmetic number, because the mean of its divisors is an integer number (75174610113).

Almost surely, 2^{1415521261225} is an apocalyptic number.

It is an amenable number.

1415521261225 is a deficient number, since it is larger than the sum of its proper divisors (388669381487).

1415521261225 is a wasteful number, since it uses less digits than its factorization.

1415521261225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9454317 (or 9454312 counting only the distinct ones).

The product of its digits is 48000, while the sum is 37.

The spelling of 1415521261225 in words is "one trillion, four hundred fifteen billion, five hundred twenty-one million, two hundred sixty-one thousand, two hundred twenty-five".