25544222051 has 2 divisors, whose sum is σ = 25544222052. Its totient is φ = 25544222050.

The previous prime is 25544221979. The next prime is 25544222071. The reversal of 25544222051 is 15022244552.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25544222051 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25544221999 and 25544222017.

It is not a weakly prime, because it can be changed into another prime (25544222071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12772111025 + 12772111026.

It is an arithmetic number, because the mean of its divisors is an integer number (12772111026).

Almost surely, 2^25544222051 is an apocalyptic number.

25544222051 is a deficient number, since it is larger than the sum of its proper divisors (1).

25544222051 is an equidigital number, since it uses as much as digits as its factorization.

25544222051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32000, while the sum is 32.

The spelling of 25544222051 in words is "twenty-five billion, five hundred forty-four million, two hundred twenty-two thousand, fifty-one".