1461725557 has 2 divisors, whose sum is σ = 1461725558. Its totient is φ = 1461725556.

The previous prime is 1461725543. The next prime is 1461725579. The reversal of 1461725557 is 7555271641.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1349386756 + 112338801 = 36734^2 + 10599^2 .

It is a cyclic number.

It is not a de Polignac number, because 1461725557 - 2¹¹ = 1461723509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1461725527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 730862778 + 730862779.

It is an arithmetic number, because the mean of its divisors is an integer number (730862779).

Almost surely, 2^1461725557 is an apocalyptic number.

It is an amenable number.

1461725557 is a deficient number, since it is larger than the sum of its proper divisors (1).

1461725557 is an equidigital number, since it uses as much as digits as its factorization.

1461725557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 294000, while the sum is 43.

The square root of 1461725557 is about 38232.5196266215. The cubic root of 1461725557 is about 1134.8939480565.

The spelling of 1461725557 in words is "one billion, four hundred sixty-one million, seven hundred twenty-five thousand, five hundred fifty-seven".