25155235402079 has 2 divisors, whose sum is σ = 25155235402080. Its totient is φ = 25155235402078.

The previous prime is 25155235402051. The next prime is 25155235402229. The reversal of 25155235402079 is 97020453255152.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25155235402079 - 2¹² = 25155235397983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25155235402879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12577617701039 + 12577617701040.

It is an arithmetic number, because the mean of its divisors is an integer number (12577617701040).

Almost surely, 2^{25155235402079} is an apocalyptic number.

25155235402079 is a deficient number, since it is larger than the sum of its proper divisors (1).

25155235402079 is an equidigital number, since it uses as much as digits as its factorization.

25155235402079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780000, while the sum is 50.

The spelling of 25155235402079 in words is "twenty-five trillion, one hundred fifty-five billion, two hundred thirty-five million, four hundred two thousand, seventy-nine".