42166604325 has 12 divisors (see below), whose sum is σ = 69715452608. Its totient is φ = 22488855600.

The previous prime is 42166604323. The next prime is 42166604327. The reversal of 42166604325 is 52340666124.

It is an interprime number because it is at equal distance from previous prime (42166604323) and next prime (42166604327).

It is not a de Polignac number, because 42166604325 - 2¹ = 42166604323 is a prime.

It is a super-2 number, since 2×42166604325² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42166604323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 281110621 + ... + 281110770.

Almost surely, 2^42166604325 is an apocalyptic number.

It is an amenable number.

42166604325 is a deficient number, since it is larger than the sum of its proper divisors (27548848283).

42166604325 is a wasteful number, since it uses less digits than its factorization.

42166604325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562221404 (or 562221399 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 39.

The spelling of 42166604325 in words is "forty-two billion, one hundred sixty-six million, six hundred four thousand, three hundred twenty-five".