25153545251 has 2 divisors, whose sum is σ = 25153545252. Its totient is φ = 25153545250.

The previous prime is 25153545247. The next prime is 25153545259. The reversal of 25153545251 is 15254535152.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25153545251 - 2² = 25153545247 is a prime.

It is not a weakly prime, because it can be changed into another prime (25153545259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12576772625 + 12576772626.

It is an arithmetic number, because the mean of its divisors is an integer number (12576772626).

Almost surely, 2^25153545251 is an apocalyptic number.

25153545251 is a deficient number, since it is larger than the sum of its proper divisors (1).

25153545251 is an equidigital number, since it uses as much as digits as its factorization.

25153545251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 150000, while the sum is 38.

The spelling of 25153545251 in words is "twenty-five billion, one hundred fifty-three million, five hundred forty-five thousand, two hundred fifty-one".