42406266225 has 24 divisors (see below), whose sum is σ = 71300034720. Its totient is φ = 22233339520.

The previous prime is 42406266223. The next prime is 42406266229. The reversal of 42406266225 is 52266260424.

It is not a de Polignac number, because 42406266225 - 2¹ = 42406266223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42406266223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4787244 + ... + 4796093.

It is an arithmetic number, because the mean of its divisors is an integer number (2970834780).

Almost surely, 2^42406266225 is an apocalyptic number.

It is an amenable number.

42406266225 is a deficient number, since it is larger than the sum of its proper divisors (28893768495).

42406266225 is a wasteful number, since it uses less digits than its factorization.

42406266225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9583409 (or 9583404 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 39.

The spelling of 42406266225 in words is "forty-two billion, four hundred six million, two hundred sixty-six thousand, two hundred twenty-five".