25022543971 has 2 divisors, whose sum is σ = 25022543972. Its totient is φ = 25022543970.

The previous prime is 25022543921. The next prime is 25022543993. The reversal of 25022543971 is 17934522052.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25022543971 - 2⁹ = 25022543459 is a prime.

It is a super-2 number, since 2×25022543971² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25022543921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12511271985 + 12511271986.

It is an arithmetic number, because the mean of its divisors is an integer number (12511271986).

Almost surely, 2^25022543971 is an apocalyptic number.

25022543971 is a deficient number, since it is larger than the sum of its proper divisors (1).

25022543971 is an equidigital number, since it uses as much as digits as its factorization.

25022543971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 151200, while the sum is 40.

The spelling of 25022543971 in words is "twenty-five billion, twenty-two million, five hundred forty-three thousand, nine hundred seventy-one".