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125765 = 525153
BaseRepresentation
bin11110101101000101
320101111222
4132231011
513011030
62410125
71032443
oct365505
9211458
10125765
1186542
1260945
1345323
1433b93
15273e5
hex1eb45

125765 has 4 divisors (see below), whose sum is σ = 150924. Its totient is φ = 100608.

The previous prime is 125753. The next prime is 125777. The reversal of 125765 is 567521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 567521 = 599619.

It is an interprime number because it is at equal distance from previous prime (125753) and next prime (125777).

It can be written as a sum of positive squares in 2 ways, for example, as 57121 + 68644 = 239^2 + 262^2 .

It is a cyclic number.

It is not a de Polignac number, because 125765 - 28 = 125509 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 11.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 125765.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12572 + ... + 12581.

It is an arithmetic number, because the mean of its divisors is an integer number (37731).

2125765 is an apocalyptic number.

It is an amenable number.

125765 is a deficient number, since it is larger than the sum of its proper divisors (25159).

125765 is an equidigital number, since it uses as much as digits as its factorization.

125765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25158.

The product of its digits is 2100, while the sum is 26.

The square root of 125765 is about 354.6336137480. The cubic root of 125765 is about 50.1017926246.

The spelling of 125765 in words is "one hundred twenty-five thousand, seven hundred sixty-five".

Divisors: 1 5 25153 125765