1625347469 has 2 divisors, whose sum is σ = 1625347470. Its totient is φ = 1625347468.

The previous prime is 1625347349. The next prime is 1625347487. The reversal of 1625347469 is 9647435261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1567130569 + 58216900 = 39587^2 + 7630^2 .

It is a cyclic number.

It is not a de Polignac number, because 1625347469 - 2¹² = 1625343373 is a prime.

It is a super-2 number, since 2×1625347469² = 5283508789969411922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1625347489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 812673734 + 812673735.

It is an arithmetic number, because the mean of its divisors is an integer number (812673735).

Almost surely, 2^1625347469 is an apocalyptic number.

It is an amenable number.

1625347469 is a deficient number, since it is larger than the sum of its proper divisors (1).

1625347469 is an equidigital number, since it uses as much as digits as its factorization.

1625347469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 47.

The square root of 1625347469 is about 40315.5983336475. The cubic root of 1625347469 is about 1175.7511343923.

The spelling of 1625347469 in words is "one billion, six hundred twenty-five million, three hundred forty-seven thousand, four hundred sixty-nine".