1025465664 has 112 divisors (see below), whose sum is σ = 2767705920. Its totient is φ = 335032320.

The previous prime is 1025465657. The next prime is 1025465681. The reversal of 1025465664 is 4665645201.

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, 3649204 + ... + 3649484.

It is an arithmetic number, because the mean of its divisors is an integer number (24711660).

Almost surely, 2^1025465664 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 1025465664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1383852960).

1025465664 is an abundant number, since it is smaller than the sum of its proper divisors (1742240256).

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

1025465664 is a wasteful number, since it uses less digits than its factorization.

1025465664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608 (or 598 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 39.

The square root of 1025465664 is about 32022.8928112374. The cubic root of 1025465664 is about 1008.4175015292.

The spelling of 1025465664 in words is "one billion, twenty-five million, four hundred sixty-five thousand, six hundred sixty-four".