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125249 = 251499
BaseRepresentation
bin11110100101000001
320100210212
4132211001
513001444
62403505
71031105
oct364501
9210725
10125249
1186113
1260595
1345017
1433905
152719e
hex1e941

125249 has 4 divisors (see below), whose sum is σ = 126000. Its totient is φ = 124500.

The previous prime is 125243. The next prime is 125261. The reversal of 125249 is 942521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-125249 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (125243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2 + ... + 500.

It is an arithmetic number, because the mean of its divisors is an integer number (31500).

2125249 is an apocalyptic number.

It is an amenable number.

125249 is a deficient number, since it is larger than the sum of its proper divisors (751).

125249 is an equidigital number, since it uses as much as digits as its factorization.

125249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750.

The product of its digits is 720, while the sum is 23.

The square root of 125249 is about 353.9053545794. The cubic root of 125249 is about 50.0331779796.

It can be divided in two parts, 125 and 249, that multiplied together give a triangular number (31125 = T249).

The spelling of 125249 in words is "one hundred twenty-five thousand, two hundred forty-nine".

Divisors: 1 251 499 125249