1046421231525 has 36 divisors (see below), whose sum is σ = 1875095440452. Its totient is φ = 557841573120.

The previous prime is 1046421231491. The next prime is 1046421231563. The reversal of 1046421231525 is 5251321246401.

1046421231525 is a `hidden beast` number, since 1 + 0 + 4 + 6 + 4 + 2 + 123 + 1 + 525 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 2712609 + 1046418518916 = 1647^2 + 1022946^2 .

It is not a de Polignac number, because 1046421231525 - 2⁶ = 1046421231461 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1046421231525.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 536184 + ... + 1542833.

It is an arithmetic number, because the mean of its divisors is an integer number (52085984457).

Almost surely, 2^{1046421231525} is an apocalyptic number.

1046421231525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1046421231525 is a deficient number, since it is larger than the sum of its proper divisors (828674208927).

1046421231525 is a wasteful number, since it uses less digits than its factorization.

1046421231525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2081270 (or 2081262 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

Adding to 1046421231525 its reverse (5251321246401), we get a palindrome (6297742477926).

The spelling of 1046421231525 in words is "one trillion, forty-six billion, four hundred twenty-one million, two hundred thirty-one thousand, five hundred twenty-five".