25126938659 has 2 divisors, whose sum is σ = 25126938660. Its totient is φ = 25126938658.

The previous prime is 25126938649. The next prime is 25126938799. The reversal of 25126938659 is 95683962152.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25126938659 is a prime.

It is a super-3 number, since 3×25126938659³ (a number of 32 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (25126938649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12563469329 + 12563469330.

It is an arithmetic number, because the mean of its divisors is an integer number (12563469330).

Almost surely, 2^25126938659 is an apocalyptic number.

25126938659 is a deficient number, since it is larger than the sum of its proper divisors (1).

25126938659 is an equidigital number, since it uses as much as digits as its factorization.

25126938659 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6998400, while the sum is 56.

The spelling of 25126938659 in words is "twenty-five billion, one hundred twenty-six million, nine hundred thirty-eight thousand, six hundred fifty-nine".