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8742025 = 52893929
BaseRepresentation
bin100001010110…
…010010001001
3121110010210201
4201112102021
54214221100
6511212201
7134206645
oct41262211
917403721
108742025
114a31016
122b17061
131a710c6
141237c25
15b7a36a
hex856489

8742025 has 12 divisors (see below), whose sum is σ = 10964700. Its totient is φ = 6913280.

The previous prime is 8742011. The next prime is 8742037. The reversal of 8742025 is 5202478.

It can be written as a sum of positive squares in 6 ways, for example, as 2064969 + 6677056 = 1437^2 + 2584^2 .

It is not a de Polignac number, because 8742025 - 213 = 8733833 is a prime.

It is a super-2 number, since 2×87420252 = 152846002201250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8741984 and 8742002.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 261 + ... + 4189.

It is an arithmetic number, because the mean of its divisors is an integer number (913725).

Almost surely, 28742025 is an apocalyptic number.

It is an amenable number.

8742025 is a deficient number, since it is larger than the sum of its proper divisors (2222675).

8742025 is a wasteful number, since it uses less digits than its factorization.

8742025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4028 (or 4023 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 8742025 is about 2956.6915632172. The cubic root of 8742025 is about 206.0016416748.

The spelling of 8742025 in words is "eight million, seven hundred forty-two thousand, twenty-five".

Divisors: 1 5 25 89 445 2225 3929 19645 98225 349681 1748405 8742025