102028425469 has 2 divisors, whose sum is σ = 102028425470. Its totient is φ = 102028425468.

The previous prime is 102028425419. The next prime is 102028425491. The reversal of 102028425469 is 964524820201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91785973444 + 10242452025 = 302962^2 + 101205^2 .

It is a cyclic number.

It is not a de Polignac number, because 102028425469 - 2¹⁵ = 102028392701 is a prime.

It is a super-2 number, since 2×102028425469² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102028425409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51014212734 + 51014212735.

It is an arithmetic number, because the mean of its divisors is an integer number (51014212735).

Almost surely, 2^102028425469 is an apocalyptic number.

It is an amenable number.

102028425469 is a deficient number, since it is larger than the sum of its proper divisors (1).

102028425469 is an equidigital number, since it uses as much as digits as its factorization.

102028425469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 276480, while the sum is 43.

The spelling of 102028425469 in words is "one hundred two billion, twenty-eight million, four hundred twenty-five thousand, four hundred sixty-nine".