25142543 has 2 divisors, whose sum is σ = 25142544. Its totient is φ = 25142542.

The previous prime is 25142527. The next prime is 25142563. The reversal of 25142543 is 34524152.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25142543 - 2⁴ = 25142527 is a prime.

It is a Chen prime.

It is a zygodrome in base 4.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25142503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12571271 + 12571272.

It is an arithmetic number, because the mean of its divisors is an integer number (12571272).

Almost surely, 2^25142543 is an apocalyptic number.

25142543 is a deficient number, since it is larger than the sum of its proper divisors (1).

25142543 is an equidigital number, since it uses as much as digits as its factorization.

25142543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4800, while the sum is 26.

The square root of 25142543 is about 5014.2340392128. The cubic root of 25142543 is about 292.9564519607.

Adding to 25142543 its reverse (34524152), we get a palindrome (59666695).

The spelling of 25142543 in words is "twenty-five million, one hundred forty-two thousand, five hundred forty-three".