25227557 has 2 divisors, whose sum is σ = 25227558. Its totient is φ = 25227556.

The previous prime is 25227547. The next prime is 25227563. The reversal of 25227557 is 75572252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14508481 + 10719076 = 3809^2 + 3274^2 .

It is a cyclic number.

It is not a de Polignac number, because 25227557 - 2¹⁶ = 25162021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25227547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12613778 + 12613779.

It is an arithmetic number, because the mean of its divisors is an integer number (12613779).

Almost surely, 2^25227557 is an apocalyptic number.

It is an amenable number.

25227557 is a deficient number, since it is larger than the sum of its proper divisors (1).

25227557 is an equidigital number, since it uses as much as digits as its factorization.

25227557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 49000, while the sum is 35.

The square root of 25227557 is about 5022.7041521475. The cubic root of 25227557 is about 293.2862698541.

The spelling of 25227557 in words is "twenty-five million, two hundred twenty-seven thousand, five hundred fifty-seven".