1630425 has 12 divisors (see below), whose sum is σ = 2695760. Its totient is φ = 869520.

The previous prime is 1630423. The next prime is 1630427. The reversal of 1630425 is 5240361.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1630423) and next prime (1630427).

It is not a de Polignac number, because 1630425 - 2¹ = 1630423 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1630423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10795 + ... + 10944.

2^1630425 is an apocalyptic number.

1630425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1630425 is a deficient number, since it is larger than the sum of its proper divisors (1065335).

1630425 is a wasteful number, since it uses less digits than its factorization.

1630425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21752 (or 21747 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 1630425 is about 1276.8809654780. The cubic root of 1630425 is about 117.6974197381.

Adding to 1630425 its reverse (5240361), we get a palindrome (6870786).

The spelling of 1630425 in words is "one million, six hundred thirty thousand, four hundred twenty-five".