25025378789 has 2 divisors, whose sum is σ = 25025378790. Its totient is φ = 25025378788.

The previous prime is 25025378761. The next prime is 25025378803. The reversal of 25025378789 is 98787352052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20518270564 + 4507108225 = 143242^2 + 67135^2 .

It is a cyclic number.

It is not a de Polignac number, because 25025378789 - 2¹⁶ = 25025313253 is a prime.

It is a super-3 number, since 3×25025378789³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25025378089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12512689394 + 12512689395.

It is an arithmetic number, because the mean of its divisors is an integer number (12512689395).

Almost surely, 2^25025378789 is an apocalyptic number.

It is an amenable number.

25025378789 is a deficient number, since it is larger than the sum of its proper divisors (1).

25025378789 is an equidigital number, since it uses as much as digits as its factorization.

25025378789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8467200, while the sum is 56.

The spelling of 25025378789 in words is "twenty-five billion, twenty-five million, three hundred seventy-eight thousand, seven hundred eighty-nine".