25114421551 has 2 divisors, whose sum is σ = 25114421552. Its totient is φ = 25114421550.

The previous prime is 25114421461. The next prime is 25114421593. The reversal of 25114421551 is 15512441152.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25114421551 - 2⁹ = 25114421039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25114427551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12557210775 + 12557210776.

It is an arithmetic number, because the mean of its divisors is an integer number (12557210776).

Almost surely, 2^25114421551 is an apocalyptic number.

25114421551 is a deficient number, since it is larger than the sum of its proper divisors (1).

25114421551 is an equidigital number, since it uses as much as digits as its factorization.

25114421551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8000, while the sum is 31.

The spelling of 25114421551 in words is "twenty-five billion, one hundred fourteen million, four hundred twenty-one thousand, five hundred fifty-one".