1249091625 has 32 divisors (see below), whose sum is σ = 2150179200. Its totient is φ = 643204800.

The previous prime is 1249091617. The next prime is 1249091639. The reversal of 1249091625 is 5261909421.

It is not a de Polignac number, because 1249091625 - 2³ = 1249091617 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46555 + ... + 68304.

It is an arithmetic number, because the mean of its divisors is an integer number (67193100).

Almost surely, 2^1249091625 is an apocalyptic number.

1249091625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1249091625 is a deficient number, since it is larger than the sum of its proper divisors (901087575).

1249091625 is a wasteful number, since it uses less digits than its factorization.

1249091625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114906 (or 114896 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 1249091625 is about 35342.4903621689. The cubic root of 1249091625 is about 1076.9563438343.

The spelling of 1249091625 in words is "one billion, two hundred forty-nine million, ninety-one thousand, six hundred twenty-five".