1625407243 has 2 divisors, whose sum is σ = 1625407244. Its totient is φ = 1625407242.

The previous prime is 1625407229. The next prime is 1625407249. The reversal of 1625407243 is 3427045261.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1625407243 - 2¹³ = 1625399051 is a prime.

It is a super-2 number, since 2×1625407243² = 5283897411193722098, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1625407199 and 1625407208.

It is not a weakly prime, because it can be changed into another prime (1625407249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 812703621 + 812703622.

It is an arithmetic number, because the mean of its divisors is an integer number (812703622).

Almost surely, 2^1625407243 is an apocalyptic number.

1625407243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1625407243 is an equidigital number, since it uses as much as digits as its factorization.

1625407243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 1625407243 is about 40316.3396528008. The cubic root of 1625407243 is about 1175.7655474103.

The spelling of 1625407243 in words is "one billion, six hundred twenty-five million, four hundred seven thousand, two hundred forty-three".