1625806290648 has 32 divisors (see below), whose sum is σ = 4064570742960. Its totient is φ = 541928094720.

The previous prime is 1625806290623. The next prime is 1625806290653. The reversal of 1625806290648 is 8460926085261.

It is a happy number.

It is a super-3 number, since 3×1625806290648³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 1527036 + ... + 2362932.

Almost surely, 2^{1625806290648} is an apocalyptic number.

It is an amenable number.

1625806290648 is an abundant number, since it is smaller than the sum of its proper divisors (2438764452312).

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

1625806290648 is a wasteful number, since it uses less digits than its factorization.

1625806290648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916947 (or 916943 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 57.

The spelling of 1625806290648 in words is "one trillion, six hundred twenty-five billion, eight hundred six million, two hundred ninety thousand, six hundred forty-eight".