1902268225 has 81 divisors (see below), whose sum is σ = 2854307547. Its totient is φ = 1256112000.

The previous prime is 1902268223. The next prime is 1902268229. The reversal of 1902268225 is 5228622091.

The square root of 1902268225 is 43615.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 1677148209 + 225120016 = 40953^2 + 15004^2 .

It is not a de Polignac number, because 1902268225 - 2¹ = 1902268223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1902268223) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 31184695 + ... + 31184755.

Almost surely, 2^1902268225 is an apocalyptic number.

1902268225 is the 43615-th square number.

1902268225 is the 21808-th centered octagonal number.

It is an amenable number.

1902268225 is a deficient number, since it is larger than the sum of its proper divisors (952039322).

1902268225 is a wasteful number, since it uses less digits than its factorization.

1902268225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180 (or 90 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The cubic root of 1902268225 is about 1239.0549999546.

The spelling of 1902268225 in words is "one billion, nine hundred two million, two hundred sixty-eight thousand, two hundred twenty-five".