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42625 = 531131
BaseRepresentation
bin1010011010000001
32011110201
422122001
52331000
6525201
7235162
oct123201
964421
1042625
112a030
1220801
131652b
1411769
15c96a
hexa681

42625 has 16 divisors (see below), whose sum is σ = 59904. Its totient is φ = 30000.

The previous prime is 42611. The next prime is 42641. The reversal of 42625 is 52624.

It is not a de Polignac number, because 42625 - 211 = 40577 is a prime.

It is a Duffinian number.

42625 is a lucky number.

It is a nialpdrome in base 9.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1360 + ... + 1390.

It is an arithmetic number, because the mean of its divisors is an integer number (3744).

242625 is an apocalyptic number.

It is an amenable number.

42625 is a deficient number, since it is larger than the sum of its proper divisors (17279).

42625 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (42624) it forms a Ruth-Aaron pair, since the sum of their prime factors is the same (57).

42625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57 (or 47 counting only the distinct ones).

The product of its digits is 480, while the sum is 19.

The square root of 42625 is about 206.4582282206. The cubic root of 42625 is about 34.9318401391.

Subtracting 42625 from its reverse (52624), we obtain a palindrome (9999).

The spelling of 42625 in words is "forty-two thousand, six hundred twenty-five".

Divisors: 1 5 11 25 31 55 125 155 275 341 775 1375 1705 3875 8525 42625