25434013431527 has 2 divisors, whose sum is σ = 25434013431528. Its totient is φ = 25434013431526.

The previous prime is 25434013431461. The next prime is 25434013431539. The reversal of 25434013431527 is 72513431043452.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25434013431527 - 2²⁸ = 25433744996071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25434013431557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12717006715763 + 12717006715764.

It is an arithmetic number, because the mean of its divisors is an integer number (12717006715764).

Almost surely, 2^{25434013431527} is an apocalyptic number.

25434013431527 is a deficient number, since it is larger than the sum of its proper divisors (1).

25434013431527 is an equidigital number, since it uses as much as digits as its factorization.

25434013431527 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1209600, while the sum is 44.

Adding to 25434013431527 its reverse (72513431043452), we get a palindrome (97947444474979).

The spelling of 25434013431527 in words is "twenty-five trillion, four hundred thirty-four billion, thirteen million, four hundred thirty-one thousand, five hundred twenty-seven".