1625151389 has 2 divisors, whose sum is σ = 1625151390. Its totient is φ = 1625151388.

The previous prime is 1625151379. The next prime is 1625151391. The reversal of 1625151389 is 9831515261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1070925625 + 554225764 = 32725^2 + 23542^2 .

It is an emirp because it is prime and its reverse (9831515261) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1625151389 is a prime.

It is a super-2 number, since 2×1625151389² = 5282234074337258642, which contains 22 as substring.

Together with 1625151391, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1625151379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 812575694 + 812575695.

It is an arithmetic number, because the mean of its divisors is an integer number (812575695).

Almost surely, 2^1625151389 is an apocalyptic number.

It is an amenable number.

1625151389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1625151389 is an equidigital number, since it uses as much as digits as its factorization.

1625151389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 41.

The square root of 1625151389 is about 40313.1664472043. The cubic root of 1625151389 is about 1175.7038520812.

The spelling of 1625151389 in words is "one billion, six hundred twenty-five million, one hundred fifty-one thousand, three hundred eighty-nine".