1902225 has 24 divisors (see below), whose sum is σ = 3388672. Its totient is φ = 936000.

The previous prime is 1902221. The next prime is 1902239. The reversal of 1902225 is 5222091.

1902225 is a nontrivial binomial coefficient, being equal to C(1951, 2).

It is not a de Polignac number, because 1902225 - 2² = 1902221 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1902221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1 + ... + 1950.

2^1902225 is an apocalyptic number.

1902225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1902225 is the 1950-th triangular number.

It is an amenable number.

1902225 is a deficient number, since it is larger than the sum of its proper divisors (1486447).

1902225 is a wasteful number, since it uses less digits than its factorization.

1902225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1977 (or 1972 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1902225 is about 1379.2117313886. The cubic root of 1902225 is about 123.9045614920.

It can be divided in two parts, 190 and 2225, that added together give a triangular number (2415 = T₆₉).

The spelling of 1902225 in words is "one million, nine hundred two thousand, two hundred twenty-five".