425917913 has 2 divisors, whose sum is σ = 425917914. Its totient is φ = 425917912.

The previous prime is 425917907. The next prime is 425917951. The reversal of 425917913 is 319719524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 376243609 + 49674304 = 19397^2 + 7048^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-425917913 is a prime.

It is a super-2 number, since 2×425917913² = 362812137228551138, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (425913913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212958956 + 212958957.

It is an arithmetic number, because the mean of its divisors is an integer number (212958957).

Almost surely, 2^425917913 is an apocalyptic number.

It is an amenable number.

425917913 is a deficient number, since it is larger than the sum of its proper divisors (1).

425917913 is an equidigital number, since it uses as much as digits as its factorization.

425917913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68040, while the sum is 41.

The square root of 425917913 is about 20637.7787806731. The cubic root of 425917913 is about 752.3881876377.

The spelling of 425917913 in words is "four hundred twenty-five million, nine hundred seventeen thousand, nine hundred thirteen".