1025415664 has 40 divisors (see below), whose sum is σ = 2445225440. Its totient is φ = 405658368.

The previous prime is 1025415631. The next prime is 1025415683. The reversal of 1025415664 is 4665145201.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 350679 + ... + 353590.

It is an arithmetic number, because the mean of its divisors is an integer number (61130636).

Almost surely, 2^1025415664 is an apocalyptic number.

1025415664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1025415664 is an abundant number, since it is smaller than the sum of its proper divisors (1419809776).

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

1025415664 is a wasteful number, since it uses less digits than its factorization.

1025415664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704297 (or 704291 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 1025415664 is about 32022.1121102278. The cubic root of 1025415664 is about 1008.4011116762.

The spelling of 1025415664 in words is "one billion, twenty-five million, four hundred fifteen thousand, six hundred sixty-four".