1625828417 has 2 divisors, whose sum is σ = 1625828418. Its totient is φ = 1625828416.

The previous prime is 1625828401. The next prime is 1625828419. The reversal of 1625828417 is 7148285261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1474636801 + 151191616 = 38401^2 + 12296^2 .

It is a cyclic number.

It is not a de Polignac number, because 1625828417 - 2⁴ = 1625828401 is a prime.

Together with 1625828419, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1625828419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 812914208 + 812914209.

It is an arithmetic number, because the mean of its divisors is an integer number (812914209).

Almost surely, 2^1625828417 is an apocalyptic number.

It is an amenable number.

1625828417 is a deficient number, since it is larger than the sum of its proper divisors (1).

1625828417 is an equidigital number, since it uses as much as digits as its factorization.

1625828417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 215040, while the sum is 44.

The square root of 1625828417 is about 40321.5626805311. The cubic root of 1625828417 is about 1175.8670930618.

The spelling of 1625828417 in words is "one billion, six hundred twenty-five million, eight hundred twenty-eight thousand, four hundred seventeen".