25135097077 has 2 divisors, whose sum is σ = 25135097078. Its totient is φ = 25135097076.

The previous prime is 25135097033. The next prime is 25135097087. The reversal of 25135097077 is 77079053152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24926410161 + 208686916 = 157881^2 + 14446^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25135097077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25135097087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12567548538 + 12567548539.

It is an arithmetic number, because the mean of its divisors is an integer number (12567548539).

Almost surely, 2^25135097077 is an apocalyptic number.

It is an amenable number.

25135097077 is a deficient number, since it is larger than the sum of its proper divisors (1).

25135097077 is an equidigital number, since it uses as much as digits as its factorization.

25135097077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 463050, while the sum is 46.

The spelling of 25135097077 in words is "twenty-five billion, one hundred thirty-five million, ninety-seven thousand, seventy-seven".