25151981741 has 2 divisors, whose sum is σ = 25151981742. Its totient is φ = 25151981740.

The previous prime is 25151981711. The next prime is 25151981801. The reversal of 25151981741 is 14718915152.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24164702500 + 987279241 = 155450^2 + 31421^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25151981741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25151981692 and 25151981701.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25151981711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12575990870 + 12575990871.

It is an arithmetic number, because the mean of its divisors is an integer number (12575990871).

Almost surely, 2^25151981741 is an apocalyptic number.

It is an amenable number.

25151981741 is a deficient number, since it is larger than the sum of its proper divisors (1).

25151981741 is an equidigital number, since it uses as much as digits as its factorization.

25151981741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 100800, while the sum is 44.

The spelling of 25151981741 in words is "twenty-five billion, one hundred fifty-one million, nine hundred eighty-one thousand, seven hundred forty-one".