42847155751225 has 36 divisors (see below), whose sum is σ = 61842138258684. Its totient is φ = 29363174023680.

The previous prime is 42847155751223. The next prime is 42847155751243. The reversal of 42847155751225 is 52215755174824.

It can be written as a sum of positive squares in 6 ways, for example, as 470336727721 + 42376819023504 = 685811^2 + 6509748^2 .

It is not a de Polignac number, because 42847155751225 - 2¹ = 42847155751223 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42847155751225.

It is not an unprimeable number, because it can be changed into a prime (42847155751223) 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, 8524572 + ... + 12584221.

Almost surely, 2^{42847155751225} is an apocalyptic number.

It is an amenable number.

42847155751225 is a deficient number, since it is larger than the sum of its proper divisors (18994982507459).

42847155751225 is a wasteful number, since it uses less digits than its factorization.

42847155751225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21110474 (or 21110462 counting only the distinct ones).

The product of its digits is 31360000, while the sum is 58.

The spelling of 42847155751225 in words is "forty-two trillion, eight hundred forty-seven billion, one hundred fifty-five million, seven hundred fifty-one thousand, two hundred twenty-five".