249977625 has 16 divisors (see below), whose sum is σ = 415963392. Its totient is φ = 133321200.

The previous prime is 249977569. The next prime is 249977669. The reversal of 249977625 is 526779942.

It is not a de Polignac number, because 249977625 - 2¹¹ = 249975577 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 332929 + ... + 333678.

It is an arithmetic number, because the mean of its divisors is an integer number (25997712).

Almost surely, 2^249977625 is an apocalyptic number.

249977625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

249977625 is a deficient number, since it is larger than the sum of its proper divisors (165985767).

249977625 is an equidigital number, since it uses as much as digits as its factorization.

249977625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666625 (or 666615 counting only the distinct ones).

The product of its digits is 1905120, while the sum is 51.

The square root of 249977625 is about 15810.6807253831. The cubic root of 249977625 is about 629.9417305644.

The spelling of 249977625 in words is "two hundred forty-nine million, nine hundred seventy-seven thousand, six hundred twenty-five".