1042305513525 has 18 divisors (see below), whose sum is σ = 1866884986850. Its totient is φ = 555896273760.

The previous prime is 1042305513521. The next prime is 1042305513541. The reversal of 1042305513525 is 5253155032401.

1042305513525 is a `hidden beast` number, since 1 + 0 + 42 + 30 + 55 + 13 + 525 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 161789777361 + 880515736164 = 402231^2 + 938358^2 .

It is not a de Polignac number, because 1042305513525 - 2² = 1042305513521 is a prime.

It is a super-2 number, since 2×1042305513525² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1042305513525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1042305513521) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2316234250 + ... + 2316234699.

Almost surely, 2^{1042305513525} is an apocalyptic number.

1042305513525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1042305513525 is a deficient number, since it is larger than the sum of its proper divisors (824579473325).

1042305513525 is a wasteful number, since it uses less digits than its factorization.

1042305513525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4632468965 (or 4632468957 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

The spelling of 1042305513525 in words is "one trillion, forty-two billion, three hundred five million, five hundred thirteen thousand, five hundred twenty-five".