25757432191 has 2 divisors, whose sum is σ = 25757432192. Its totient is φ = 25757432190.

The previous prime is 25757432177. The next prime is 25757432203. The reversal of 25757432191 is 19123475752.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25757432191 - 2⁵ = 25757432159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25757432111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12878716095 + 12878716096.

It is an arithmetic number, because the mean of its divisors is an integer number (12878716096).

Almost surely, 2^25757432191 is an apocalyptic number.

25757432191 is a deficient number, since it is larger than the sum of its proper divisors (1).

25757432191 is an equidigital number, since it uses as much as digits as its factorization.

25757432191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 529200, while the sum is 46.

The spelling of 25757432191 in words is "twenty-five billion, seven hundred fifty-seven million, four hundred thirty-two thousand, one hundred ninety-one".