425920919 has 2 divisors, whose sum is σ = 425920920. Its totient is φ = 425920918.

The previous prime is 425920897. The next prime is 425920921. The reversal of 425920919 is 919029524.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 425920919 - 2²⁸ = 157485463 is a prime.

It is a super-2 number, since 2×425920919² = 362817258483609122, which contains 22 as substring.

Together with 425920921, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (425920519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212960459 + 212960460.

It is an arithmetic number, because the mean of its divisors is an integer number (212960460).

Almost surely, 2^425920919 is an apocalyptic number.

425920919 is a deficient number, since it is larger than the sum of its proper divisors (1).

425920919 is an equidigital number, since it uses as much as digits as its factorization.

425920919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 425920919 is about 20637.8516081495. The cubic root of 425920919 is about 752.3899576764.

The spelling of 425920919 in words is "four hundred twenty-five million, nine hundred twenty thousand, nine hundred nineteen".