Search a number
-
+
23023925 = 52920957
BaseRepresentation
bin101011111010…
…1000100110101
31121022201212222
41113311010311
521343231200
62141252125
7366462101
oct127650465
947281788
1023023925
1111aa6241
127864045
134a01932
1430b4901
15204bd85
hex15f5135

23023925 has 6 divisors (see below), whose sum is σ = 28549698. Its totient is φ = 18419120.

The previous prime is 23023907. The next prime is 23023993. The reversal of 23023925 is 52932032.

It can be written as a sum of positive squares in 3 ways, for example, as 51076 + 22972849 = 226^2 + 4793^2 .

It is not a de Polignac number, because 23023925 - 214 = 23007541 is a prime.

It is a super-2 number, since 2×230239252 = 1060202244811250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23023894 and 23023903.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 460454 + ... + 460503.

It is an arithmetic number, because the mean of its divisors is an integer number (4758283).

Almost surely, 223023925 is an apocalyptic number.

23023925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23023925 is a deficient number, since it is larger than the sum of its proper divisors (5525773).

23023925 is an equidigital number, since it uses as much as digits as its factorization.

23023925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920967 (or 920962 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 23023925 is about 4798.3252286605. The cubic root of 23023925 is about 284.4852718100.

Adding to 23023925 its reverse (52932032), we get a palindrome (75955957).

The spelling of 23023925 in words is "twenty-three million, twenty-three thousand, nine hundred twenty-five".

Divisors: 1 5 25 920957 4604785 23023925