49387061825 has 24 divisors (see below), whose sum is σ = 61571668536. Its totient is φ = 39296192000.

The previous prime is 49387061821. The next prime is 49387061831. The reversal of 49387061825 is 52816078394.

It is a Cunningham number, because it is equal to 222232²+1.

It can be written as a sum of positive squares in 12 ways, for example, as 2660186929 + 46726874896 = 51577^2 + 216164^2 .

It is not a de Polignac number, because 49387061825 - 2² = 49387061821 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49387061821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3809855 + ... + 3822795.

It is an arithmetic number, because the mean of its divisors is an integer number (2565486189).

It is a 2-persistent number, because it is pandigital, and so is 2⋅49387061825 = 98774123650, but 3⋅49387061825 = 148161185475 is not.

Almost surely, 2^49387061825 is an apocalyptic number.

It is an amenable number.

49387061825 is a deficient number, since it is larger than the sum of its proper divisors (12184606711).

49387061825 is a wasteful number, since it uses less digits than its factorization.

49387061825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13765 (or 13760 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 53.

The spelling of 49387061825 in words is "forty-nine billion, three hundred eighty-seven million, sixty-one thousand, eight hundred twenty-five".