25262557 has 2 divisors, whose sum is σ = 25262558. Its totient is φ = 25262556.

The previous prime is 25262537. The next prime is 25262569. The reversal of 25262557 is 75526252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20848356 + 4414201 = 4566^2 + 2101^2 .

It is a cyclic number.

It is not a de Polignac number, because 25262557 - 2¹⁹ = 24738269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25262537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12631278 + 12631279.

It is an arithmetic number, because the mean of its divisors is an integer number (12631279).

Almost surely, 2^25262557 is an apocalyptic number.

It is an amenable number.

25262557 is a deficient number, since it is larger than the sum of its proper divisors (1).

25262557 is an equidigital number, since it uses as much as digits as its factorization.

25262557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42000, while the sum is 34.

The square root of 25262557 is about 5026.1871234565. The cubic root of 25262557 is about 293.4218395404.

The spelling of 25262557 in words is "twenty-five million, two hundred sixty-two thousand, five hundred fifty-seven".