25257101 has 2 divisors, whose sum is σ = 25257102. Its totient is φ = 25257100.

The previous prime is 25257077. The next prime is 25257103. The reversal of 25257101 is 10175252.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18361225 + 6895876 = 4285^2 + 2626^2 .

It is a cyclic number.

It is not a de Polignac number, because 25257101 - 2¹⁴ = 25240717 is a prime.

It is a Sophie Germain prime.

Together with 25257103, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25257103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12628550 + 12628551.

It is an arithmetic number, because the mean of its divisors is an integer number (12628551).

Almost surely, 2^25257101 is an apocalyptic number.

It is an amenable number.

25257101 is a deficient number, since it is larger than the sum of its proper divisors (1).

25257101 is an equidigital number, since it uses as much as digits as its factorization.

25257101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 700, while the sum is 23.

The square root of 25257101 is about 5025.6443367990. The cubic root of 25257101 is about 293.4007144049.

The spelling of 25257101 in words is "twenty-five million, two hundred fifty-seven thousand, one hundred one".