1870257225 has 24 divisors (see below), whose sum is σ = 3144575520. Its totient is φ = 980561920.

The previous prime is 1870257223. The next prime is 1870257239. The reversal of 1870257225 is 5227520781.

It is not a de Polignac number, because 1870257225 - 2¹ = 1870257223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1870257223) 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 in 23 ways as a sum of consecutive naturals, for example, 206904 + ... + 215753.

It is an arithmetic number, because the mean of its divisors is an integer number (131023980).

Almost surely, 2^1870257225 is an apocalyptic number.

1870257225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1870257225 is a deficient number, since it is larger than the sum of its proper divisors (1274318295).

1870257225 is a wasteful number, since it uses less digits than its factorization.

1870257225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422729 (or 422724 counting only the distinct ones).

The product of its (nonzero) digits is 78400, while the sum is 39.

The square root of 1870257225 is about 43246.4706652462. The cubic root of 1870257225 is about 1232.0654536067.

The spelling of 1870257225 in words is "one billion, eight hundred seventy million, two hundred fifty-seven thousand, two hundred twenty-five".