425240917 has 2 divisors, whose sum is σ = 425240918. Its totient is φ = 425240916.

The previous prime is 425240899. The next prime is 425240923. The reversal of 425240917 is 719042524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 378263601 + 46977316 = 19449^2 + 6854^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-425240917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (425240927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212620458 + 212620459.

It is an arithmetic number, because the mean of its divisors is an integer number (212620459).

Almost surely, 2^425240917 is an apocalyptic number.

It is an amenable number.

425240917 is a deficient number, since it is larger than the sum of its proper divisors (1).

425240917 is an equidigital number, since it uses as much as digits as its factorization.

425240917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 425240917 is about 20621.3703957812. The cubic root of 425240917 is about 751.9893362048.

The spelling of 425240917 in words is "four hundred twenty-five million, two hundred forty thousand, nine hundred seventeen".