25261757 has 2 divisors, whose sum is σ = 25261758. Its totient is φ = 25261756.

The previous prime is 25261741. The next prime is 25261759. The reversal of 25261757 is 75716252.

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., 16434916 + 8826841 = 4054^2 + 2971^2 .

It is a cyclic number.

It is not a de Polignac number, because 25261757 - 2⁴ = 25261741 is a prime.

Together with 25261759, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25261759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12630878 + 12630879.

It is an arithmetic number, because the mean of its divisors is an integer number (12630879).

Almost surely, 2^25261757 is an apocalyptic number.

It is an amenable number.

25261757 is a deficient number, since it is larger than the sum of its proper divisors (1).

25261757 is an equidigital number, since it uses as much as digits as its factorization.

25261757 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29400, while the sum is 35.

The square root of 25261757 is about 5026.1075396374. The cubic root of 25261757 is about 293.4187422035.

The spelling of 25261757 in words is "twenty-five million, two hundred sixty-one thousand, seven hundred fifty-seven".