1625641356 has 24 divisors (see below), whose sum is σ = 3822122304. Its totient is φ = 537743440.

The previous prime is 1625641331. The next prime is 1625641379. The reversal of 1625641356 is 6531465261.

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 7 ways as a sum of consecutive naturals, for example, 515490 + ... + 518633.

It is an arithmetic number, because the mean of its divisors is an integer number (159255096).

Almost surely, 2^1625641356 is an apocalyptic number.

It is an amenable number.

1625641356 is an abundant number, since it is smaller than the sum of its proper divisors (2196480948).

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

1625641356 is a wasteful number, since it uses less digits than its factorization.

1625641356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1034261 (or 1034259 counting only the distinct ones).

The product of its digits is 129600, while the sum is 39.

The square root of 1625641356 is about 40319.2429988461. The cubic root of 1625641356 is about 1175.8219945532.

The spelling of 1625641356 in words is "one billion, six hundred twenty-five million, six hundred forty-one thousand, three hundred fifty-six".