49665825 has 48 divisors (see below), whose sum is σ = 99547200. Its totient is φ = 24076800.

The previous prime is 49665821. The next prime is 49665853. The reversal of 49665825 is 52856694.

49665825 is a `hidden beast` number, since 4 + 9 + 66 + 582 + 5 = 666.

It is not a de Polignac number, because 49665825 - 2² = 49665821 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (49665821) 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, 4081 + ... + 10769.

It is an arithmetic number, because the mean of its divisors is an integer number (2073900).

Almost surely, 2^49665825 is an apocalyptic number.

49665825 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

49665825 is an abundant number, since it is smaller than the sum of its proper divisors (49881375).

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

49665825 is a wasteful number, since it uses less digits than its factorization.

49665825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6719 (or 6708 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The square root of 49665825 is about 7047.3984561681. The cubic root of 49665825 is about 367.5805737533.

The spelling of 49665825 in words is "forty-nine million, six hundred sixty-five thousand, eight hundred twenty-five".