25454607019 has 2 divisors, whose sum is σ = 25454607020. Its totient is φ = 25454607018.

The previous prime is 25454607011. The next prime is 25454607037. The reversal of 25454607019 is 91070645452.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25454607019 - 2³ = 25454607011 is a prime.

It is a super-2 number, since 2×25454607019² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25454607011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12727303509 + 12727303510.

It is an arithmetic number, because the mean of its divisors is an integer number (12727303510).

Almost surely, 2^25454607019 is an apocalyptic number.

25454607019 is a deficient number, since it is larger than the sum of its proper divisors (1).

25454607019 is an equidigital number, since it uses as much as digits as its factorization.

25454607019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 302400, while the sum is 43.

The spelling of 25454607019 in words is "twenty-five billion, four hundred fifty-four million, six hundred seven thousand, nineteen".