1013555142225 has 72 divisors (see below), whose sum is σ = 1836371136600. Its totient is φ = 534319104000.

The previous prime is 1013555142221. The next prime is 1013555142293. The reversal of 1013555142225 is 5222415553101.

1013555142225 is a `hidden beast` number, since 1 + 0 + 135 + 5 + 514 + 2 + 2 + 2 + 5 = 666.

It can be written as a sum of positive squares in 12 ways, for example, as 164501625744 + 849053516481 = 405588^2 + 921441^2 .

It is not a de Polignac number, because 1013555142225 - 2² = 1013555142221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1013555142225.

It is not an unprimeable number, because it can be changed into a prime (1013555142221) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 85881325 + ... + 85893125.

It is an arithmetic number, because the mean of its divisors is an integer number (25505154675).

Almost surely, 2^{1013555142225} is an apocalyptic number.

1013555142225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1013555142225 is a deficient number, since it is larger than the sum of its proper divisors (822815994375).

1013555142225 is a wasteful number, since it uses less digits than its factorization.

1013555142225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16195 (or 16187 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

The spelling of 1013555142225 in words is "one trillion, thirteen billion, five hundred fifty-five million, one hundred forty-two thousand, two hundred twenty-five".