1258245490 has 16 divisors (see below), whose sum is σ = 2267800920. Its totient is φ = 502640640.

The previous prime is 1258245487. The next prime is 1258245503. The reversal of 1258245490 is 945428521.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 600887169 + 657358321 = 24513^2 + 25639^2 .

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 74121 + ... + 89500.

Almost surely, 2^1258245490 is an apocalyptic number.

1258245490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1258245490 is a deficient number, since it is larger than the sum of its proper divisors (1009555430).

1258245490 is a wasteful number, since it uses less digits than its factorization.

1258245490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164397.

The product of its (nonzero) digits is 115200, while the sum is 40.

The square root of 1258245490 is about 35471.7562294285. The cubic root of 1258245490 is about 1079.5807386106.

The spelling of 1258245490 in words is "one billion, two hundred fifty-eight million, two hundred forty-five thousand, four hundred ninety".