1625540937516 has 120 divisors (see below), whose sum is σ = 4644599008896. Its totient is φ = 493522813440.

The previous prime is 1625540937353. The next prime is 1625540937529. The reversal of 1625540937516 is 6157390455261.

1625540937516 is a `hidden beast` number, since 1 + 6 + 2 + 5 + 540 + 93 + 7 + 5 + 1 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4589311 + ... + 4930806.

Almost surely, 2^{1625540937516} is an apocalyptic number.

It is an amenable number.

1625540937516 is an abundant number, since it is smaller than the sum of its proper divisors (3019058071380).

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

1625540937516 is a wasteful number, since it uses less digits than its factorization.

1625540937516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9520181 (or 9520170 counting only the distinct ones).

The product of its (nonzero) digits is 6804000, while the sum is 54.

The spelling of 1625540937516 in words is "one trillion, six hundred twenty-five billion, five hundred forty million, nine hundred thirty-seven thousand, five hundred sixteen".