1025415949 has 2 divisors, whose sum is σ = 1025415950. Its totient is φ = 1025415948.

The previous prime is 1025415913. The next prime is 1025415961. The reversal of 1025415949 is 9495145201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 734952100 + 290463849 = 27110^2 + 17043^2 .

It is a cyclic number.

It is not a de Polignac number, because 1025415949 - 2⁷ = 1025415821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1025415749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 512707974 + 512707975.

It is an arithmetic number, because the mean of its divisors is an integer number (512707975).

Almost surely, 2^1025415949 is an apocalyptic number.

It is an amenable number.

1025415949 is a deficient number, since it is larger than the sum of its proper divisors (1).

1025415949 is an equidigital number, since it uses as much as digits as its factorization.

1025415949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64800, while the sum is 40.

The square root of 1025415949 is about 32022.1165602775. The cubic root of 1025415949 is about 1008.4012050998.

The spelling of 1025415949 in words is "one billion, twenty-five million, four hundred fifteen thousand, nine hundred forty-nine".