25540079 has 2 divisors, whose sum is σ = 25540080. Its totient is φ = 25540078.

The previous prime is 25540061. The next prime is 25540111. The reversal of 25540079 is 97004552.

It is an a-pointer prime, because the next prime (25540111) can be obtained adding 25540079 to its sum of digits (32).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25540079 - 2⁸ = 25539823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25540019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12770039 + 12770040.

It is an arithmetic number, because the mean of its divisors is an integer number (12770040).

Almost surely, 2^25540079 is an apocalyptic number.

25540079 is a deficient number, since it is larger than the sum of its proper divisors (1).

25540079 is an equidigital number, since it uses as much as digits as its factorization.

25540079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 25540079 is about 5053.7193234290. The cubic root of 25540079 is about 294.4923914430.

The spelling of 25540079 in words is "twenty-five million, five hundred forty thousand, seventy-nine".