1103749854025 has 81 divisors (see below), whose sum is σ = 1724739991551. Its totient is φ = 698334698880.

The previous prime is 1103749854023. The next prime is 1103749854041. The reversal of 1103749854025 is 5204589473011.

It is a happy number.

The square root of 1103749854025 is 1050595.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 732152324281 + 371597529744 = 855659^2 + 609588^2 .

It is not a de Polignac number, because 1103749854025 - 2¹ = 1103749854023 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1103749854025.

It is not an unprimeable number, because it can be changed into a prime (1103749854023) by changing a digit.

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 80 ways as a sum of consecutive naturals, for example, 478019571 + ... + 478021879.

Almost surely, 2^{1103749854025} is an apocalyptic number.

1103749854025 is the 1050595-th square number.

1103749854025 is the 525298-th centered octagonal number.

It is an amenable number.

1103749854025 is a deficient number, since it is larger than the sum of its proper divisors (620990137526).

1103749854025 is an frugal number, since it uses more digits than its factorization.

1103749854025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4668 (or 2334 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 49.

Multiplying 1103749854025 by its sum of digits (49), we get a square (54083742847225 = 7354165²).

1103749854025 divided by its sum of digits (49) gives a square (22525507225 = 150085²).

The spelling of 1103749854025 in words is "one trillion, one hundred three billion, seven hundred forty-nine million, eight hundred fifty-four thousand, twenty-five".