1642025 has 24 divisors (see below), whose sum is σ = 2541504. Its totient is φ = 1022400.

The previous prime is 1642021. The next prime is 1642031. The reversal of 1642025 is 5202461.

It is a happy number.

It is not a de Polignac number, because 1642025 - 2² = 1642021 is a prime.

It is a super-2 number, since 2×1642025² = 5392492201250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1641988 and 1642006.

It is not an unprimeable number, because it can be changed into a prime (1642021) 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, 1499 + ... + 2351.

It is an arithmetic number, because the mean of its divisors is an integer number (105896).

2^1642025 is an apocalyptic number.

It is an amenable number.

1642025 is a deficient number, since it is larger than the sum of its proper divisors (899479).

1642025 is a wasteful number, since it uses less digits than its factorization.

1642025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881 (or 876 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1642025 is about 1281.4152332480. The cubic root of 1642025 is about 117.9758880160.

Adding to 1642025 its reverse (5202461), we get a palindrome (6844486).

It can be divided in two parts, 16 and 42025, that multiplied together give a square (672400 = 820²).

The spelling of 1642025 in words is "one million, six hundred forty-two thousand, twenty-five".