249901225 has 48 divisors (see below), whose sum is σ = 365651200. Its totient is φ = 169344000.

The previous prime is 249901217. The next prime is 249901229. The reversal of 249901225 is 522109942.

249901225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 249901225 - 2³ = 249901217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249901229) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1294729 + ... + 1294921.

Almost surely, 2^249901225 is an apocalyptic number.

249901225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

249901225 is a deficient number, since it is larger than the sum of its proper divisors (115749975).

249901225 is a wasteful number, since it uses less digits than its factorization.

249901225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375 (or 356 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 249901225 is about 15808.2644524945. The cubic root of 249901225 is about 629.8775482173.

The spelling of 249901225 in words is "two hundred forty-nine million, nine hundred one thousand, two hundred twenty-five".