25989265019 has 2 divisors, whose sum is σ = 25989265020. Its totient is φ = 25989265018.

The previous prime is 25989264967. The next prime is 25989265031. The reversal of 25989265019 is 91056298952.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25989265019 - 2²⁴ = 25972487803 is a prime.

It is a super-2 number, since 2×25989265019² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25989265039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12994632509 + 12994632510.

It is an arithmetic number, because the mean of its divisors is an integer number (12994632510).

Almost surely, 2^25989265019 is an apocalyptic number.

25989265019 is a deficient number, since it is larger than the sum of its proper divisors (1).

25989265019 is an equidigital number, since it uses as much as digits as its factorization.

25989265019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3499200, while the sum is 56.

The spelling of 25989265019 in words is "twenty-five billion, nine hundred eighty-nine million, two hundred sixty-five thousand, nineteen".