2425857989 has 2 divisors, whose sum is σ = 2425857990. Its totient is φ = 2425857988.

The previous prime is 2425857961. The next prime is 2425858021. The reversal of 2425857989 is 9897585242.

2425857989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2345755489 + 80102500 = 48433^2 + 8950^2 .

It is a cyclic number.

It is not a de Polignac number, because 2425857989 - 2¹² = 2425853893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2425857949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1212928994 + 1212928995.

It is an arithmetic number, because the mean of its divisors is an integer number (1212928995).

Almost surely, 2^2425857989 is an apocalyptic number.

It is an amenable number.

2425857989 is a deficient number, since it is larger than the sum of its proper divisors (1).

2425857989 is an equidigital number, since it uses as much as digits as its factorization.

2425857989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14515200, while the sum is 59.

The square root of 2425857989 is about 49252.9997969667. Note that the first 3 decimals coincide. The cubic root of 2425857989 is about 1343.6571200876.

The spelling of 2425857989 in words is "two billion, four hundred twenty-five million, eight hundred fifty-seven thousand, nine hundred eighty-nine".