1620176425 has 18 divisors (see below), whose sum is σ = 2337023598. Its totient is φ = 1110977280.

The previous prime is 1620176413. The next prime is 1620176447. The reversal of 1620176425 is 5246710261.

It can be written as a sum of positive squares in 3 ways, for example, as 3493161 + 1616683264 = 1869^2 + 40208^2 .

It is not a de Polignac number, because 1620176425 - 2⁷ = 1620176297 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 660072 + ... + 662521.

Almost surely, 2^1620176425 is an apocalyptic number.

It is an amenable number.

1620176425 is a deficient number, since it is larger than the sum of its proper divisors (716847173).

1620176425 is a wasteful number, since it uses less digits than its factorization.

1620176425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1322617 (or 1322605 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 1620176425 is about 40251.4151925122. The cubic root of 1620176425 is about 1174.5029254033.

Adding to 1620176425 its reverse (5246710261), we get a palindrome (6866886686).

The spelling of 1620176425 in words is "one billion, six hundred twenty million, one hundred seventy-six thousand, four hundred twenty-five".