9925749461 has 2 divisors, whose sum is σ = 9925749462. Its totient is φ = 9925749460.

The previous prime is 9925749443. The next prime is 9925749481. The reversal of 9925749461 is 1649475299.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9359595025 + 566154436 = 96745^2 + 23794^2 .

It is a cyclic number.

It is not a de Polignac number, because 9925749461 - 2¹⁸ = 9925487317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9925749397 and 9925749406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9925749481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4962874730 + 4962874731.

It is an arithmetic number, because the mean of its divisors is an integer number (4962874731).

Almost surely, 2^9925749461 is an apocalyptic number.

It is an amenable number.

9925749461 is a deficient number, since it is larger than the sum of its proper divisors (1).

9925749461 is an equidigital number, since it uses as much as digits as its factorization.

9925749461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4898880, while the sum is 56.

The square root of 9925749461 is about 99628.0555917860. The cubic root of 9925749461 is about 2149.0891733046.

The spelling of 9925749461 in words is "nine billion, nine hundred twenty-five million, seven hundred forty-nine thousand, four hundred sixty-one".