1878767225 has 12 divisors (see below), whose sum is σ = 2333947344. Its totient is φ = 1500255120.

The previous prime is 1878767221. The next prime is 1878767227. The reversal of 1878767225 is 5227678781.

It is not a de Polignac number, because 1878767225 - 2² = 1878767221 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1878767221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55019 + ... + 82368.

It is an arithmetic number, because the mean of its divisors is an integer number (194495612).

Almost surely, 2^1878767225 is an apocalyptic number.

It is an amenable number.

1878767225 is a deficient number, since it is larger than the sum of its proper divisors (455180119).

1878767225 is a wasteful number, since it uses less digits than its factorization.

1878767225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137944 (or 137939 counting only the distinct ones).

The product of its digits is 2634240, while the sum is 53.

The square root of 1878767225 is about 43344.7485285127. The cubic root of 1878767225 is about 1233.9313314245.

The spelling of 1878767225 in words is "one billion, eight hundred seventy-eight million, seven hundred sixty-seven thousand, two hundred twenty-five".