425515547 has 2 divisors, whose sum is σ = 425515548. Its totient is φ = 425515546.

The previous prime is 425515511. The next prime is 425515549. The reversal of 425515547 is 745515524.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 425515547 - 2⁸ = 425515291 is a prime.

Together with 425515549, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 425515547.

It is not a weakly prime, because it can be changed into another prime (425515549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212757773 + 212757774.

It is an arithmetic number, because the mean of its divisors is an integer number (212757774).

Almost surely, 2^425515547 is an apocalyptic number.

425515547 is a deficient number, since it is larger than the sum of its proper divisors (1).

425515547 is an equidigital number, since it uses as much as digits as its factorization.

425515547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 140000, while the sum is 38.

The square root of 425515547 is about 20628.0281898198. The cubic root of 425515547 is about 752.1511851559.

The spelling of 425515547 in words is "four hundred twenty-five million, five hundred fifteen thousand, five hundred forty-seven".