1630125 has 80 divisors (see below), whose sum is σ = 3624192. Its totient is φ = 712800.

The previous prime is 1630117. The next prime is 1630127. The reversal of 1630125 is 5210361.

1630125 = T₅₄ + T₅₅ + ... + T₂₁₄.

It is not a de Polignac number, because 1630125 - 2³ = 1630117 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 1630098 and 1630107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1630127) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 70864 + ... + 70886.

2^1630125 is an apocalyptic number.

1630125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1630125 is an abundant number, since it is smaller than the sum of its proper divisors (1994067).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1630125 is an equidigital number, since it uses as much as digits as its factorization.

1630125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57 (or 38 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 1630125 is about 1276.7634863200. The cubic root of 1630125 is about 117.6902004769.

Adding to 1630125 its reverse (5210361), we get a palindrome (6840486).

The spelling of 1630125 in words is "one million, six hundred thirty thousand, one hundred twenty-five".