1625664954 has 8 divisors (see below), whose sum is σ = 3251329920. Its totient is φ = 541888316.

The previous prime is 1625664881. The next prime is 1625664961. The reversal of 1625664954 is 4594665261.

It is a sphenic number, since it is the product of 3 distinct primes.

1625664954 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135472074 + ... + 135472085.

It is an arithmetic number, because the mean of its divisors is an integer number (406416240).

Almost surely, 2^1625664954 is an apocalyptic number.

1625664954 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1625664954 is a wasteful number, since it uses less digits than its factorization.

1625664954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270944164.

The product of its digits is 1555200, while the sum is 48.

The square root of 1625664954 is about 40319.5356372069. The cubic root of 1625664954 is about 1175.8276839822.

The spelling of 1625664954 in words is "one billion, six hundred twenty-five million, six hundred sixty-four thousand, nine hundred fifty-four".