25419454259 has 2 divisors, whose sum is σ = 25419454260. Its totient is φ = 25419454258.

The previous prime is 25419454199. The next prime is 25419454273. The reversal of 25419454259 is 95245491452.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25419454259 - 2¹² = 25419450163 is a prime.

It is a super-2 number, since 2×25419454259² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25419454559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12709727129 + 12709727130.

It is an arithmetic number, because the mean of its divisors is an integer number (12709727130).

Almost surely, 2^25419454259 is an apocalyptic number.

25419454259 is a deficient number, since it is larger than the sum of its proper divisors (1).

25419454259 is an equidigital number, since it uses as much as digits as its factorization.

25419454259 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592000, while the sum is 50.

The spelling of 25419454259 in words is "twenty-five billion, four hundred nineteen million, four hundred fifty-four thousand, two hundred fifty-nine".