249752475 has 36 divisors (see below), whose sum is σ = 511242576. Its totient is φ = 114171840.

The previous prime is 249752453. The next prime is 249752509. The reversal of 249752475 is 574257942.

It is not a de Polignac number, because 249752475 - 2⁶ = 249752411 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 249752475.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 77712 + ... + 80861.

Almost surely, 2^249752475 is an apocalyptic number.

249752475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

249752475 is an abundant number, since it is smaller than the sum of its proper divisors (261490101).

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

249752475 is a wasteful number, since it uses less digits than its factorization.

249752475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158596 (or 158588 counting only the distinct ones).

The product of its digits is 705600, while the sum is 45.

The square root of 249752475 is about 15803.5589346198. The cubic root of 249752475 is about 629.7525483212.

The spelling of 249752475 in words is "two hundred forty-nine million, seven hundred fifty-two thousand, four hundred seventy-five".