102025155 has 16 divisors (see below), whose sum is σ = 171832320. Its totient is φ = 51549408.

The previous prime is 102025141. The next prime is 102025163. The reversal of 102025155 is 551520201.

It is not a de Polignac number, because 102025155 - 2⁴ = 102025139 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 178707 + ... + 179276.

It is an arithmetic number, because the mean of its divisors is an integer number (10739520).

Almost surely, 2^102025155 is an apocalyptic number.

102025155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

102025155 is a deficient number, since it is larger than the sum of its proper divisors (69807165).

102025155 is a wasteful number, since it uses less digits than its factorization.

102025155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358010.

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 102025155 is about 10100.7502196619. The cubic root of 102025155 is about 467.2712789691.

Adding to 102025155 its reverse (551520201), we get a palindrome (653545356).

It can be divided in two parts, 1020251 and 55, that added together give a triangular number (1020306 = T₁₄₂₈).

The spelling of 102025155 in words is "one hundred two million, twenty-five thousand, one hundred fifty-five".