1630349025 has 12 divisors (see below), whose sum is σ = 2695510512. Its totient is φ = 869519440.

The previous prime is 1630348961. The next prime is 1630349029. The reversal of 1630349025 is 5209430361.

It is not a de Polignac number, because 1630349025 - 2⁶ = 1630348961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1630349029) 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, 10868919 + ... + 10869068.

It is an arithmetic number, because the mean of its divisors is an integer number (224625876).

Almost surely, 2^1630349025 is an apocalyptic number.

1630349025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1630349025 is a deficient number, since it is larger than the sum of its proper divisors (1065161487).

1630349025 is a wasteful number, since it uses less digits than its factorization.

1630349025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21738000 (or 21737995 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 1630349025 is about 40377.5807224752. The cubic root of 1630349025 is about 1176.9559154390.

Adding to 1630349025 its reverse (5209430361), we get a palindrome (6839779386).

The spelling of 1630349025 in words is "one billion, six hundred thirty million, three hundred forty-nine thousand, twenty-five".