25025250281 has 2 divisors, whose sum is σ = 25025250282. Its totient is φ = 25025250280.

The previous prime is 25025250277. The next prime is 25025250353. The reversal of 25025250281 is 18205252052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24487242256 + 538008025 = 156484^2 + 23195^2 .

It is a cyclic number.

It is not a de Polignac number, because 25025250281 - 2² = 25025250277 is a prime.

It is a super-3 number, since 3×25025250281³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (25025250221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12512625140 + 12512625141.

It is an arithmetic number, because the mean of its divisors is an integer number (12512625141).

Almost surely, 2^25025250281 is an apocalyptic number.

It is an amenable number.

25025250281 is a deficient number, since it is larger than the sum of its proper divisors (1).

25025250281 is an equidigital number, since it uses as much as digits as its factorization.

25025250281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16000, while the sum is 32.

The spelling of 25025250281 in words is "twenty-five billion, twenty-five million, two hundred fifty thousand, two hundred eighty-one".