1625774621442 has 32 divisors (see below), whose sum is σ = 3298794206400. Its totient is φ = 534090382848.

The previous prime is 1625774621431. The next prime is 1625774621491. The reversal of 1625774621442 is 2441264775261.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4794567 + ... + 5122442.

It is an arithmetic number, because the mean of its divisors is an integer number (103087318950).

Almost surely, 2^{1625774621442} is an apocalyptic number.

1625774621442 is an abundant number, since it is smaller than the sum of its proper divisors (1673019584958).

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

1625774621442 is a wasteful number, since it uses less digits than its factorization.

1625774621442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9917410.

The product of its digits is 4515840, while the sum is 51.

The spelling of 1625774621442 in words is "one trillion, six hundred twenty-five billion, seven hundred seventy-four million, six hundred twenty-one thousand, four hundred forty-two".