25247938423 has 2 divisors, whose sum is σ = 25247938424. Its totient is φ = 25247938422.

The previous prime is 25247938409. The next prime is 25247938451. The reversal of 25247938423 is 32483974252.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25247938423 is a prime.

It is a super-2 number, since 2×25247938423² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25247938453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12623969211 + 12623969212.

It is an arithmetic number, because the mean of its divisors is an integer number (12623969212).

Almost surely, 2^25247938423 is an apocalyptic number.

25247938423 is a deficient number, since it is larger than the sum of its proper divisors (1).

25247938423 is an equidigital number, since it uses as much as digits as its factorization.

25247938423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2903040, while the sum is 49.

The spelling of 25247938423 in words is "twenty-five billion, two hundred forty-seven million, nine hundred thirty-eight thousand, four hundred twenty-three".