1625551204125 has 64 divisors (see below), whose sum is σ = 2786402361600. Its totient is φ = 841114310400.

The previous prime is 1625551204087. The next prime is 1625551204133. The reversal of 1625551204125 is 5214021555261.

It is a happy number.

It is not a de Polignac number, because 1625551204125 - 2⁹ = 1625551203613 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2064339 + ... + 2740911.

It is an arithmetic number, because the mean of its divisors is an integer number (43537536900).

Almost surely, 2^{1625551204125} is an apocalyptic number.

1625551204125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1625551204125 is a deficient number, since it is larger than the sum of its proper divisors (1160851157475).

1625551204125 is a wasteful number, since it uses less digits than its factorization.

1625551204125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676783 (or 676773 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 39.

Adding to 1625551204125 its reverse (5214021555261), we get a palindrome (6839572759386).

The spelling of 1625551204125 in words is "one trillion, six hundred twenty-five billion, five hundred fifty-one million, two hundred four thousand, one hundred twenty-five".