425149631 has 2 divisors, whose sum is σ = 425149632. Its totient is φ = 425149630.

The previous prime is 425149619. The next prime is 425149661. The reversal of 425149631 is 136941524.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-425149631 is a prime.

It is a super-2 number, since 2×425149631² = 361504417478872322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 425149591 and 425149600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (425149601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212574815 + 212574816.

It is an arithmetic number, because the mean of its divisors is an integer number (212574816).

Almost surely, 2^425149631 is an apocalyptic number.

425149631 is a deficient number, since it is larger than the sum of its proper divisors (1).

425149631 is an equidigital number, since it uses as much as digits as its factorization.

425149631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 35.

The square root of 425149631 is about 20619.1568935299. The cubic root of 425149631 is about 751.9355227793.

The spelling of 425149631 in words is "four hundred twenty-five million, one hundred forty-nine thousand, six hundred thirty-one".