25278053033 has 2 divisors, whose sum is σ = 25278053034. Its totient is φ = 25278053032.

The previous prime is 25278052997. The next prime is 25278053063. The reversal of 25278053033 is 33035087252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21319504144 + 3958548889 = 146012^2 + 62917^2 .

It is a cyclic number.

It is not a de Polignac number, because 25278053033 - 2²⁰ = 25277004457 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (25278053063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12639026516 + 12639026517.

It is an arithmetic number, because the mean of its divisors is an integer number (12639026517).

Almost surely, 2^25278053033 is an apocalyptic number.

It is an amenable number.

25278053033 is a deficient number, since it is larger than the sum of its proper divisors (1).

25278053033 is an equidigital number, since it uses as much as digits as its factorization.

25278053033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 151200, while the sum is 38.

The spelling of 25278053033 in words is "twenty-five billion, two hundred seventy-eight million, fifty-three thousand, thirty-three".