425149591 has 4 divisors (see below), whose sum is σ = 430973632. Its totient is φ = 419325552.

The previous prime is 425149577. The next prime is 425149601. The reversal of 425149591 is 195941524.

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

It is a cyclic number.

It is not a de Polignac number, because 425149591 - 2⁵ = 425149559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425149561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2911911 + ... + 2912056.

It is an arithmetic number, because the mean of its divisors is an integer number (107743408).

Almost surely, 2^425149591 is an apocalyptic number.

425149591 is a deficient number, since it is larger than the sum of its proper divisors (5824041).

425149591 is an equidigital number, since it uses as much as digits as its factorization.

425149591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5824040.

The product of its digits is 64800, while the sum is 40.

The square root of 425149591 is about 20619.1559235581. The cubic root of 425149591 is about 751.9354991975.

The spelling of 425149591 in words is "four hundred twenty-five million, one hundred forty-nine thousand, five hundred ninety-one".