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102152025 = 3252454009
BaseRepresentation
bin1100001011010…
…11011101011001
321010012212020100
412011223131121
5202122331100
614045250013
72350164213
oct605533531
9233185210
10102152025
1152731368
122a263909
13182181b1
14d7d15b3
158e7c400
hex616b759

102152025 has 18 divisors (see below), whose sum is σ = 182966030. Its totient is φ = 54480960.

The previous prime is 102152023. The next prime is 102152027. The reversal of 102152025 is 520251201.

It is an interprime number because it is at equal distance from previous prime (102152023) and next prime (102152027).

It can be written as a sum of positive squares in 3 ways, for example, as 576 + 102151449 = 24^2 + 10107^2 .

It is not a de Polignac number, because 102152025 - 21 = 102152023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102151989 and 102152007.

It is not an unprimeable number, because it can be changed into a prime (102152021) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 226780 + ... + 227229.

Almost surely, 2102152025 is an apocalyptic number.

102152025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

102152025 is a deficient number, since it is larger than the sum of its proper divisors (80814005).

102152025 is a wasteful number, since it uses less digits than its factorization.

102152025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454025 (or 454017 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 102152025 is about 10107.0284950622. The cubic root of 102152025 is about 467.4648853109.

The spelling of 102152025 in words is "one hundred two million, one hundred fifty-two thousand, twenty-five".

Divisors: 1 3 5 9 15 25 45 75 225 454009 1362027 2270045 4086081 6810135 11350225 20430405 34050675 102152025