25898745619 has 2 divisors, whose sum is σ = 25898745620. Its totient is φ = 25898745618.

The previous prime is 25898745541. The next prime is 25898745623. The reversal of 25898745619 is 91654789852.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25898745619 - 2²⁷ = 25764527891 is a prime.

It is a super-2 number, since 2×25898745619² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25898745919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12949372809 + 12949372810.

It is an arithmetic number, because the mean of its divisors is an integer number (12949372810).

Almost surely, 2^25898745619 is an apocalyptic number.

25898745619 is a deficient number, since it is larger than the sum of its proper divisors (1).

25898745619 is an equidigital number, since it uses as much as digits as its factorization.

25898745619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43545600, while the sum is 64.

The spelling of 25898745619 in words is "twenty-five billion, eight hundred ninety-eight million, seven hundred forty-five thousand, six hundred nineteen".