1055355563025 has 135 divisors (see below), whose sum is σ = 2012407557699. Its totient is φ = 546756376320.

The previous prime is 1055355563023. The next prime is 1055355563077. The reversal of 1055355563025 is 5203655535501.

The square root of 1055355563025 is 1027305.

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

1055355563025 is a `hidden beast` number, since 1 + 0 + 5 + 5 + 3 + 5 + 5 + 5 + 630 + 2 + 5 = 666.

It can be written as a sum of positive squares in 13 ways, for example, as 826657368849 + 228698194176 = 909207^2 + 478224^2 .

It is a tau number, because it is divible by the number of its divisors (135).

It is not a de Polignac number, because 1055355563025 - 2¹ = 1055355563023 is a prime.

It is a super-2 number, since 2×1055355563025² (a number of 25 digits) contains 22 as substring.

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 (1055355563023) by changing a digit.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 1710462517 + ... + 1710463133.

Almost surely, 2^{1055355563025} is an apocalyptic number.

1055355563025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1055355563025 is the 1027305-th square number.

1055355563025 is the 513653-rd centered octagonal number.

It is an amenable number.

1055355563025 is a deficient number, since it is larger than the sum of its proper divisors (957051994674).

1055355563025 is an frugal number, since it uses more digits than its factorization.

1055355563025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1330 (or 662 counting only the distinct ones).

The product of its (nonzero) digits is 1687500, while the sum is 45.

The spelling of 1055355563025 in words is "one trillion, fifty-five billion, three hundred fifty-five million, five hundred sixty-three thousand, twenty-five".