25511250419 has 2 divisors, whose sum is σ = 25511250420. Its totient is φ = 25511250418.

The previous prime is 25511250409. The next prime is 25511250449. The reversal of 25511250419 is 91405211552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25511250419 - 2²⁸ = 25242814963 is a prime.

It is a super-2 number, since 2×25511250419² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25511250409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12755625209 + 12755625210.

It is an arithmetic number, because the mean of its divisors is an integer number (12755625210).

Almost surely, 2^25511250419 is an apocalyptic number.

25511250419 is a deficient number, since it is larger than the sum of its proper divisors (1).

25511250419 is an equidigital number, since it uses as much as digits as its factorization.

25511250419 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18000, while the sum is 35.

The spelling of 25511250419 in words is "twenty-five billion, five hundred eleven million, two hundred fifty thousand, four hundred nineteen".