249425085 has 64 divisors (see below), whose sum is σ = 508193280. Its totient is φ = 101606400.

The previous prime is 249425047. The next prime is 249425089. The reversal of 249425085 is 580524942.

It is not a de Polignac number, because 249425085 - 2¹¹ = 249423037 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249425089) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 36435 + ... + 42735.

It is an arithmetic number, because the mean of its divisors is an integer number (7940520).

Almost surely, 2^249425085 is an apocalyptic number.

It is an amenable number.

249425085 is an abundant number, since it is smaller than the sum of its proper divisors (258768195).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

249425085 is a wasteful number, since it uses less digits than its factorization.

249425085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6358.

The product of its (nonzero) digits is 115200, while the sum is 39.

The square root of 249425085 is about 15793.1974280068. The cubic root of 249425085 is about 629.4772559662.

The spelling of 249425085 in words is "two hundred forty-nine million, four hundred twenty-five thousand, eighty-five".