653425890 has 64 divisors (see below), whose sum is σ = 1703915136. Its totient is φ = 159409152.

The previous prime is 653425859. The next prime is 653425901. The reversal of 653425890 is 98524356.

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 31 ways as a sum of consecutive naturals, for example, 36657 + ... + 51483.

It is an arithmetic number, because the mean of its divisors is an integer number (26623674).

Almost surely, 2^653425890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 653425890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (851957568).

653425890 is an abundant number, since it is smaller than the sum of its proper divisors (1050489246).

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

653425890 is a wasteful number, since it uses less digits than its factorization.

653425890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14963.

The product of its (nonzero) digits is 259200, while the sum is 42.

The square root of 653425890 is about 25562.1965018658. The cubic root of 653425890 is about 867.7583060353.

The spelling of 653425890 in words is "six hundred fifty-three million, four hundred twenty-five thousand, eight hundred ninety".