1625056774 has 32 divisors (see below), whose sum is σ = 2728509696. Its totient is φ = 719500320.

The previous prime is 1625056721. The next prime is 1625056813. The reversal of 1625056774 is 4776505261.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a self number, because there is not a number n which added to its sum of digits gives 1625056774.

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 15 ways as a sum of consecutive naturals, for example, 373399 + ... + 377725.

It is an arithmetic number, because the mean of its divisors is an integer number (85265928).

Almost surely, 2^1625056774 is an apocalyptic number.

1625056774 is a deficient number, since it is larger than the sum of its proper divisors (1103452922).

1625056774 is a wasteful number, since it uses less digits than its factorization.

1625056774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4780.

The product of its (nonzero) digits is 352800, while the sum is 43.

The square root of 1625056774 is about 40311.9929301443. The cubic root of 1625056774 is about 1175.6810354625.

The spelling of 1625056774 in words is "one billion, six hundred twenty-five million, fifty-six thousand, seven hundred seventy-four".