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25123141 = 52148221
BaseRepresentation
bin101111111010…
…1100101000101
31202021101110201
41133311211011
522412420031
62254250501
7423354211
oct137654505
952241421
1025123141
11131aa42a
1284b6a31
135288284
14349d941
152313d61
hex17f5945

25123141 has 4 divisors (see below), whose sum is σ = 25171884. Its totient is φ = 25074400.

The previous prime is 25123129. The next prime is 25123159. The reversal of 25123141 is 14132152.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3500641 + 21622500 = 1871^2 + 4650^2 .

It is a cyclic number.

It is not a de Polignac number, because 25123141 - 211 = 25121093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25123171) 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, 23590 + ... + 24631.

It is an arithmetic number, because the mean of its divisors is an integer number (6292971).

Almost surely, 225123141 is an apocalyptic number.

It is an amenable number.

25123141 is a deficient number, since it is larger than the sum of its proper divisors (48743).

25123141 is an equidigital number, since it uses as much as digits as its factorization.

25123141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48742.

The product of its digits is 240, while the sum is 19.

The square root of 25123141 is about 5012.2989735250. The cubic root of 25123141 is about 292.8810763477.

Adding to 25123141 its reverse (14132152), we get a palindrome (39255293).

The spelling of 25123141 in words is "twenty-five million, one hundred twenty-three thousand, one hundred forty-one".

Divisors: 1 521 48221 25123141