102545125 has 8 divisors (see below), whose sum is σ = 127976472. Its totient is φ = 82036000.

The previous prime is 102545083. The next prime is 102545137. The reversal of 102545125 is 521545201.

It can be written as a sum of positive squares in 4 ways, for example, as 21958596 + 80586529 = 4686^2 + 8977^2 .

It is not a de Polignac number, because 102545125 - 2⁹ = 102544613 is a prime.

It is a super-2 number, since 2×102545125² = 21031005322531250, which contains 22 as substring.

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 102545125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 410056 + ... + 410305.

It is an arithmetic number, because the mean of its divisors is an integer number (15997059).

Almost surely, 2^102545125 is an apocalyptic number.

It is an amenable number.

102545125 is a deficient number, since it is larger than the sum of its proper divisors (25431347).

102545125 is an frugal number, since it uses more digits than its factorization.

102545125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820376 (or 820366 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 102545125 is about 10126.4566853367. The cubic root of 102545125 is about 468.0637484082.

The spelling of 102545125 in words is "one hundred two million, five hundred forty-five thousand, one hundred twenty-five".