1081736372025 has 120 divisors (see below), whose sum is σ = 2095737114240. Its totient is φ = 550557596160.

The previous prime is 1081736371993. The next prime is 1081736372029. The reversal of 1081736372025 is 5202736371801.

1081736372025 is a `hidden beast` number, since 1 + 0 + 8 + 1 + 7 + 3 + 637 + 2 + 0 + 2 + 5 = 666.

It is not a de Polignac number, because 1081736372025 - 2⁵ = 1081736371993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1081736372029) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 20140156 + ... + 20193794.

It is an arithmetic number, because the mean of its divisors is an integer number (17464475952).

Almost surely, 2^{1081736372025} is an apocalyptic number.

1081736372025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1081736372025 is a deficient number, since it is larger than the sum of its proper divisors (1014000742215).

1081736372025 is a wasteful number, since it uses less digits than its factorization.

1081736372025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54117 (or 54103 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The spelling of 1081736372025 in words is "one trillion, eighty-one billion, seven hundred thirty-six million, three hundred seventy-two thousand, twenty-five".