102770125 has 8 divisors (see below), whose sum is σ = 128257272. Its totient is φ = 82216000.

The previous prime is 102770123. The next prime is 102770189. The reversal of 102770125 is 521077201.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1425636 + 101344489 = 1194^2 + 10067^2 .

It is not a de Polignac number, because 102770125 - 2¹ = 102770123 is a prime.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102770125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102770123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 410956 + ... + 411205.

It is an arithmetic number, because the mean of its divisors is an integer number (16032159).

Almost surely, 2^102770125 is an apocalyptic number.

It is an amenable number.

102770125 is a deficient number, since it is larger than the sum of its proper divisors (25487147).

102770125 is an frugal number, since it uses more digits than its factorization.

102770125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822176 (or 822166 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 25.

The square root of 102770125 is about 10137.5601107959. The cubic root of 102770125 is about 468.4058332929.

The spelling of 102770125 in words is "one hundred two million, seven hundred seventy thousand, one hundred twenty-five".