425501018 has 4 divisors (see below), whose sum is σ = 638251530. Its totient is φ = 212750508.

The previous prime is 425501017. The next prime is 425501023. The reversal of 425501018 is 810105524.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 425473129 + 27889 = 20627^2 + 167^2 .

It is a super-2 number, since 2×425501018² = 362102232638072648, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (425501017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106375253 + ... + 106375256.

Almost surely, 2^425501018 is an apocalyptic number.

425501018 is a deficient number, since it is larger than the sum of its proper divisors (212750512).

425501018 is a wasteful number, since it uses less digits than its factorization.

425501018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212750511.

The product of its (nonzero) digits is 1600, while the sum is 26.

The square root of 425501018 is about 20627.6760203373. The cubic root of 425501018 is about 752.1426244590.

The spelling of 425501018 in words is "four hundred twenty-five million, five hundred one thousand, eighteen".