425947749547 has 2 divisors, whose sum is σ = 425947749548. Its totient is φ = 425947749546.

The previous prime is 425947749481. The next prime is 425947749553. The reversal of 425947749547 is 745947749524.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 425947749547 - 2¹⁹ = 425947225259 is a prime.

It is not a weakly prime, because it can be changed into another prime (425947746547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212973874773 + 212973874774.

It is an arithmetic number, because the mean of its divisors is an integer number (212973874774).

Almost surely, 2^425947749547 is an apocalyptic number.

425947749547 is a deficient number, since it is larger than the sum of its proper divisors (1).

425947749547 is an equidigital number, since it uses as much as digits as its factorization.

425947749547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 355622400, while the sum is 67.

The spelling of 425947749547 in words is "four hundred twenty-five billion, nine hundred forty-seven million, seven hundred forty-nine thousand, five hundred forty-seven".