25144531741 has 6 divisors (see below), whose sum is σ = 29249761470. Its totient is φ = 21552455736.

The previous prime is 25144531723. The next prime is 25144531757. The reversal of 25144531741 is 14713544152.

It can be written as a sum of positive squares in only one way, i.e., 17359116516 + 7785415225 = 131754^2 + 88235^2 .

It is a de Polignac number, because none of the positive numbers 2^k-25144531741 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25144531741.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25144531541) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 256576806 + ... + 256576903.

It is an arithmetic number, because the mean of its divisors is an integer number (4874960245).

Almost surely, 2^25144531741 is an apocalyptic number.

It is an amenable number.

25144531741 is a deficient number, since it is larger than the sum of its proper divisors (4105229729).

25144531741 is an equidigital number, since it uses as much as digits as its factorization.

25144531741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513153723 (or 513153716 counting only the distinct ones).

The product of its digits is 67200, while the sum is 37.

The spelling of 25144531741 in words is "twenty-five billion, one hundred forty-four million, five hundred thirty-one thousand, seven hundred forty-one".