42866678980225 has 27 divisors (see below), whose sum is σ = 53916807328579. Its totient is φ = 33808505116400.

The previous prime is 42866678980201. The next prime is 42866678980253. The reversal of 42866678980225 is 52208987666824.

The square root of 42866678980225 is 6547265.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 15432004432881 + 27434674547344 = 3928359^2 + 5237812^2 .

It is not a de Polignac number, because 42866678980225 - 2⁴⁵ = 7682306891393 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2324269854 + ... + 2324288296.

Almost surely, 2^{42866678980225} is an apocalyptic number.

42866678980225 is the 6547265-th square number.

42866678980225 is the 3273633-rd centered octagonal number.

It is an amenable number.

42866678980225 is a deficient number, since it is larger than the sum of its proper divisors (11050128348354).

42866678980225 is an frugal number, since it uses more digits than its factorization.

42866678980225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37038 (or 18519 counting only the distinct ones).

The product of its (nonzero) digits is 1114767360, while the sum is 73.

The spelling of 42866678980225 in words is "forty-two trillion, eight hundred sixty-six billion, six hundred seventy-eight million, nine hundred eighty thousand, two hundred twenty-five".