1025423437 has 2 divisors, whose sum is σ = 1025423438. Its totient is φ = 1025423436.

The previous prime is 1025423431. The next prime is 1025423449. The reversal of 1025423437 is 7343245201.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 832380201 + 193043236 = 28851^2 + 13894^2 .

It is an emirp because it is prime and its reverse (7343245201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1025423437 - 2¹¹ = 1025421389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1025423399 and 1025423408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1025423431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 512711718 + 512711719.

It is an arithmetic number, because the mean of its divisors is an integer number (512711719).

Almost surely, 2^1025423437 is an apocalyptic number.

It is an amenable number.

1025423437 is a deficient number, since it is larger than the sum of its proper divisors (1).

1025423437 is an equidigital number, since it uses as much as digits as its factorization.

1025423437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 31.

The square root of 1025423437 is about 32022.2334792563. The cubic root of 1025423437 is about 1008.4036596777.

Adding to 1025423437 its reverse (7343245201), we get a palindrome (8368668638).

The spelling of 1025423437 in words is "one billion, twenty-five million, four hundred twenty-three thousand, four hundred thirty-seven".