105278125 has 24 divisors (see below), whose sum is σ = 134053920. Its totient is φ = 82650000.

The previous prime is 105278101. The next prime is 105278143. The reversal of 105278125 is 521872501.

It is not a de Polignac number, because 105278125 - 2¹¹ = 105276077 is a prime.

It is a super-2 number, since 2×105278125² = 22166967207031250, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 184090 + ... + 184660.

It is an arithmetic number, because the mean of its divisors is an integer number (5585580).

Almost surely, 2^105278125 is an apocalyptic number.

It is an amenable number.

105278125 is a deficient number, since it is larger than the sum of its proper divisors (28775795).

105278125 is an frugal number, since it uses more digits than its factorization.

105278125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655 (or 635 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 31.

The square root of 105278125 is about 10260.5129014099. The cubic root of 105278125 is about 472.1855732162.

The spelling of 105278125 in words is "one hundred five million, two hundred seventy-eight thousand, one hundred twenty-five".