1625241721442 has 32 divisors (see below), whose sum is σ = 2477608383744. Its totient is φ = 799406150400.

The previous prime is 1625241721423. The next prime is 1625241721531. The reversal of 1625241721442 is 2441271425261.

It is a self number, because there is not a number n which added to its sum of digits gives 1625241721442.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 469585592 + ... + 469589052.

It is an arithmetic number, because the mean of its divisors is an integer number (77425261992).

Almost surely, 2^{1625241721442} is an apocalyptic number.

1625241721442 is a deficient number, since it is larger than the sum of its proper divisors (852366662302).

1625241721442 is a wasteful number, since it uses less digits than its factorization.

1625241721442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7274.

The product of its digits is 215040, while the sum is 41.

The spelling of 1625241721442 in words is "one trillion, six hundred twenty-five billion, two hundred forty-one million, seven hundred twenty-one thousand, four hundred forty-two".