1625828401 has 2 divisors, whose sum is σ = 1625828402. Its totient is φ = 1625828400.

The previous prime is 1625828389. The next prime is 1625828417. The reversal of 1625828401 is 1048285261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1356080625 + 269747776 = 36825^2 + 16424^2 .

It is a cyclic number.

It is not a de Polignac number, because 1625828401 - 2¹¹ = 1625826353 is a prime.

It is not a weakly prime, because it can be changed into another prime (1625825401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 812914200 + 812914201.

It is an arithmetic number, because the mean of its divisors is an integer number (812914201).

Almost surely, 2^1625828401 is an apocalyptic number.

It is an amenable number.

1625828401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1625828401 is an equidigital number, since it uses as much as digits as its factorization.

1625828401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30720, while the sum is 37.

The square root of 1625828401 is about 40321.5624821261. The cubic root of 1625828401 is about 1175.8670892045.

The spelling of 1625828401 in words is "one billion, six hundred twenty-five million, eight hundred twenty-eight thousand, four hundred one".