25266253933 has 2 divisors, whose sum is σ = 25266253934. Its totient is φ = 25266253932.

The previous prime is 25266253879. The next prime is 25266253939. The reversal of 25266253933 is 33935266252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24950729764 + 315524169 = 157958^2 + 17763^2 .

It is a cyclic number.

It is not a de Polignac number, because 25266253933 - 2²¹ = 25264156781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25266253939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12633126966 + 12633126967.

It is an arithmetic number, because the mean of its divisors is an integer number (12633126967).

Almost surely, 2^25266253933 is an apocalyptic number.

It is an amenable number.

25266253933 is a deficient number, since it is larger than the sum of its proper divisors (1).

25266253933 is an equidigital number, since it uses as much as digits as its factorization.

25266253933 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1749600, while the sum is 46.

The spelling of 25266253933 in words is "twenty-five billion, two hundred sixty-six million, two hundred fifty-three thousand, nine hundred thirty-three".