1925156249 has 2 divisors, whose sum is σ = 1925156250. Its totient is φ = 1925156248.

The previous prime is 1925156231. The next prime is 1925156257. The reversal of 1925156249 is 9426515291.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1524355849 + 400800400 = 39043^2 + 20020^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1925156249 is a prime.

It is not a weakly prime, because it can be changed into another prime (1925156549) by changing a digit.

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 as a sum of consecutive naturals, namely, 962578124 + 962578125.

It is an arithmetic number, because the mean of its divisors is an integer number (962578125).

Almost surely, 2^1925156249 is an apocalyptic number.

It is an amenable number.

1925156249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1925156249 is an equidigital number, since it uses as much as digits as its factorization.

1925156249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 194400, while the sum is 44.

The square root of 1925156249 is about 43876.6025234407. The cubic root of 1925156249 is about 1244.0046234617.

The spelling of 1925156249 in words is "one billion, nine hundred twenty-five million, one hundred fifty-six thousand, two hundred forty-nine".