425444531 has 2 divisors, whose sum is σ = 425444532. Its totient is φ = 425444530.

The previous prime is 425444491. The next prime is 425444543. The reversal of 425444531 is 135444524.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 425444531 - 2¹⁰ = 425443507 is a prime.

It is a super-2 number, since 2×425444531² = 362006097915619922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (425444581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212722265 + 212722266.

It is an arithmetic number, because the mean of its divisors is an integer number (212722266).

Almost surely, 2^425444531 is an apocalyptic number.

425444531 is a deficient number, since it is larger than the sum of its proper divisors (1).

425444531 is an equidigital number, since it uses as much as digits as its factorization.

425444531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38400, while the sum is 32.

The square root of 425444531 is about 20626.3067707236. The cubic root of 425444531 is about 752.1093396497.

The spelling of 425444531 in words is "four hundred twenty-five million, four hundred forty-four thousand, five hundred thirty-one".