25400233 has 2 divisors, whose sum is σ = 25400234. Its totient is φ = 25400232.

The previous prime is 25400171. The next prime is 25400251. The reversal of 25400233 is 33200452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14197824 + 11202409 = 3768^2 + 3347^2 .

It is a cyclic number.

It is not a de Polignac number, because 25400233 - 2¹³ = 25392041 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25400233.

It is not a weakly prime, because it can be changed into another prime (25400293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12700116 + 12700117.

It is an arithmetic number, because the mean of its divisors is an integer number (12700117).

Almost surely, 2^25400233 is an apocalyptic number.

It is an amenable number.

25400233 is a deficient number, since it is larger than the sum of its proper divisors (1).

25400233 is an equidigital number, since it uses as much as digits as its factorization.

25400233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 25400233 is about 5039.8643830960. The cubic root of 25400233 is about 293.9539047235.

Adding to 25400233 its reverse (33200452), we get a palindrome (58600685).

The spelling of 25400233 in words is "twenty-five million, four hundred thousand, two hundred thirty-three".