425518501 has 2 divisors, whose sum is σ = 425518502. Its totient is φ = 425518500.

The previous prime is 425518481. The next prime is 425518519. The reversal of 425518501 is 105815524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 363817476 + 61701025 = 19074^2 + 7855^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-425518501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (425518531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212759250 + 212759251.

It is an arithmetic number, because the mean of its divisors is an integer number (212759251).

Almost surely, 2^425518501 is an apocalyptic number.

It is an amenable number.

425518501 is a deficient number, since it is larger than the sum of its proper divisors (1).

425518501 is an equidigital number, since it uses as much as digits as its factorization.

425518501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8000, while the sum is 31.

The square root of 425518501 is about 20628.0997913041. The cubic root of 425518501 is about 752.1529256716.

The spelling of 425518501 in words is "four hundred twenty-five million, five hundred eighteen thousand, five hundred one".