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23154025 = 52926161
BaseRepresentation
bin101100001010…
…0110101101001
31121120100100111
41120110311221
521411412100
62144134321
7400543306
oct130246551
947510314
1023154025
1112084a64
1279073a1
134a48c0b
14310a0ad
1520756ba
hex1614d69

23154025 has 6 divisors (see below), whose sum is σ = 28711022. Its totient is φ = 18523200.

The previous prime is 23154011. The next prime is 23154029. The reversal of 23154025 is 52045132.

It can be written as a sum of positive squares in 3 ways, for example, as 458329 + 22695696 = 677^2 + 4764^2 .

It is not a de Polignac number, because 23154025 - 217 = 23022953 is a prime.

It is a super-2 number, since 2×231540252 = 1072217747401250, 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 = 23153987 and 23154005.

It is not an unprimeable number, because it can be changed into a prime (23154029) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 463056 + ... + 463105.

Almost surely, 223154025 is an apocalyptic number.

23154025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23154025 is a deficient number, since it is larger than the sum of its proper divisors (5556997).

23154025 is an equidigital number, since it uses as much as digits as its factorization.

23154025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 926171 (or 926166 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 23154025 is about 4811.8629448479. The cubic root of 23154025 is about 285.0201073328.

Adding to 23154025 its reverse (52045132), we get a palindrome (75199157).

The spelling of 23154025 in words is "twenty-three million, one hundred fifty-four thousand, twenty-five".

Divisors: 1 5 25 926161 4630805 23154025