1625540116 has 12 divisors (see below), whose sum is σ = 2851792020. Its totient is φ = 810742400.

The previous prime is 1625540099. The next prime is 1625540123. The reversal of 1625540116 is 6110455261.

It can be written as a sum of positive squares in 2 ways, for example, as 1225700100 + 399840016 = 35010^2 + 19996^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 505111 + ... + 508318.

It is an arithmetic number, because the mean of its divisors is an integer number (237649335).

Almost surely, 2^1625540116 is an apocalyptic number.

It is an amenable number.

1625540116 is a deficient number, since it is larger than the sum of its proper divisors (1226251904).

1625540116 is a wasteful number, since it uses less digits than its factorization.

1625540116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1013834 (or 1013832 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 1625540116 is about 40317.9874993780. The cubic root of 1625540116 is about 1175.7975851738.

Adding to 1625540116 its reverse (6110455261), we get a palindrome (7735995377).

The spelling of 1625540116 in words is "one billion, six hundred twenty-five million, five hundred forty thousand, one hundred sixteen".