1625455416 has 64 divisors (see below), whose sum is σ = 4425472800. Its totient is φ = 494512128.

The previous prime is 1625455409. The next prime is 1625455421. The reversal of 1625455416 is 6145545261.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1501 + ... + 57036.

Almost surely, 2^1625455416 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1625455416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2212736400).

1625455416 is an abundant number, since it is smaller than the sum of its proper divisors (2800017384).

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

1625455416 is a wasteful number, since it uses less digits than its factorization.

1625455416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58648 (or 58644 counting only the distinct ones).

The product of its digits is 144000, while the sum is 39.

The square root of 1625455416 is about 40316.9370860436. The cubic root of 1625455416 is about 1175.7771628776. Note that the first 3 decimals are identical.

The spelling of 1625455416 in words is "one billion, six hundred twenty-five million, four hundred fifty-five thousand, four hundred sixteen".