425648149 has 4 divisors (see below), whose sum is σ = 425690080. Its totient is φ = 425606220.

The previous prime is 425648137. The next prime is 425648191. The reversal of 425648149 is 941846524.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 425648149 - 2⁵ = 425648117 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 (425648749) 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, 4894 + ... + 29584.

It is an arithmetic number, because the mean of its divisors is an integer number (106422520).

Almost surely, 2^425648149 is an apocalyptic number.

It is an amenable number.

425648149 is a deficient number, since it is larger than the sum of its proper divisors (41931).

425648149 is a wasteful number, since it uses less digits than its factorization.

425648149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41930.

The product of its digits is 276480, while the sum is 43.

The square root of 425648149 is about 20631.2420614950. The cubic root of 425648149 is about 752.2293071687.

The spelling of 425648149 in words is "four hundred twenty-five million, six hundred forty-eight thousand, one hundred forty-nine".