425634973 has 2 divisors, whose sum is σ = 425634974. Its totient is φ = 425634972.

The previous prime is 425634959. The next prime is 425634977. The reversal of 425634973 is 379436524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 408767524 + 16867449 = 20218^2 + 4107^2 .

It is a cyclic number.

It is not a de Polignac number, because 425634973 - 2²⁵ = 392080541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (425634977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212817486 + 212817487.

It is an arithmetic number, because the mean of its divisors is an integer number (212817487).

Almost surely, 2^425634973 is an apocalyptic number.

It is an amenable number.

425634973 is a deficient number, since it is larger than the sum of its proper divisors (1).

425634973 is an equidigital number, since it uses as much as digits as its factorization.

425634973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 43.

The square root of 425634973 is about 20630.9227374832. The cubic root of 425634973 is about 752.2215452997.

The spelling of 425634973 in words is "four hundred twenty-five million, six hundred thirty-four thousand, nine hundred seventy-three".