Search a number
-
+
10125725 = 52405029
BaseRepresentation
bin100110101000…
…000110011101
3201001102212212
4212220012131
510043010400
61001010205
7152032031
oct46500635
921042785
1010125725
115796675
123483965
132136b6c
1414b81c1
15d50335
hex9a819d

10125725 has 6 divisors (see below), whose sum is σ = 12555930. Its totient is φ = 8100560.

The previous prime is 10125721. The next prime is 10125737. The reversal of 10125725 is 52752101.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1819801 + 8305924 = 1349^2 + 2882^2 .

It is not a de Polignac number, because 10125725 - 22 = 10125721 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10125725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10125721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 202490 + ... + 202539.

It is an arithmetic number, because the mean of its divisors is an integer number (2092655).

Almost surely, 210125725 is an apocalyptic number.

It is an amenable number.

10125725 is a deficient number, since it is larger than the sum of its proper divisors (2430205).

10125725 is an equidigital number, since it uses as much as digits as its factorization.

10125725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405039 (or 405034 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 23.

The square root of 10125725 is about 3182.0944360594. The cubic root of 10125725 is about 216.3425990324.

Adding to 10125725 its reverse (52752101), we get a palindrome (62877826).

The spelling of 10125725 in words is "ten million, one hundred twenty-five thousand, seven hundred twenty-five".

Divisors: 1 5 25 405029 2025145 10125725