25525277501 has 2 divisors, whose sum is σ = 25525277502. Its totient is φ = 25525277500.

The previous prime is 25525277473. The next prime is 25525277513. The reversal of 25525277501 is 10577252552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21741797401 + 3783480100 = 147451^2 + 61510^2 .

It is a cyclic number.

It is not a de Polignac number, because 25525277501 - 2³⁰ = 24451535677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25525270501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12762638750 + 12762638751.

It is an arithmetic number, because the mean of its divisors is an integer number (12762638751).

Almost surely, 2^25525277501 is an apocalyptic number.

It is an amenable number.

25525277501 is a deficient number, since it is larger than the sum of its proper divisors (1).

25525277501 is an equidigital number, since it uses as much as digits as its factorization.

25525277501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 245000, while the sum is 41.

The spelling of 25525277501 in words is "twenty-five billion, five hundred twenty-five million, two hundred seventy-seven thousand, five hundred one".