42366261435525 has 36 divisors (see below), whose sum is σ = 76047286294980. Its totient is φ = 22546325625600.

The previous prime is 42366261435497. The next prime is 42366261435529. The reversal of 42366261435525 is 52553416266324.

42366261435525 is a `hidden beast` number, since 4 + 2 + 3 + 6 + 6 + 261 + 4 + 355 + 25 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 821559147201 + 41544702288324 = 906399^2 + 6445518^2 .

It is not a de Polignac number, because 42366261435525 - 2²¹ = 42366259338373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42366261435529) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 204120240 + ... + 204327689.

It is an arithmetic number, because the mean of its divisors is an integer number (2112424619305).

Almost surely, 2^{42366261435525} is an apocalyptic number.

42366261435525 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42366261435525 is a deficient number, since it is larger than the sum of its proper divisors (33681024859455).

42366261435525 is a wasteful number, since it uses less digits than its factorization.

42366261435525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408448406 (or 408448398 counting only the distinct ones).

The product of its digits is 31104000, while the sum is 54.

The spelling of 42366261435525 in words is "forty-two trillion, three hundred sixty-six billion, two hundred sixty-one million, four hundred thirty-five thousand, five hundred twenty-five".