49871925 has 18 divisors (see below), whose sum is σ = 89326562. Its totient is φ = 26598240.

The previous prime is 49871923. The next prime is 49871971. The reversal of 49871925 is 52917894.

49871925 is a `hidden beast` number, since 498 + 71 + 92 + 5 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 81 + 49871844 = 9^2 + 7062^2 .

It is not a de Polignac number, because 49871925 - 2¹ = 49871923 is a prime.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49871923) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 110602 + ... + 111051.

Almost surely, 2^49871925 is an apocalyptic number.

49871925 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

49871925 is a deficient number, since it is larger than the sum of its proper divisors (39454637).

49871925 is a wasteful number, since it uses less digits than its factorization.

49871925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221669 (or 221661 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 49871925 is about 7062.0057349170. The cubic root of 49871925 is about 368.0883260143.

The spelling of 49871925 in words is "forty-nine million, eight hundred seventy-one thousand, nine hundred twenty-five".