1025724864 has 28 divisors (see below), whose sum is σ = 2713897544. Its totient is φ = 341908224.

The previous prime is 1025724857. The next prime is 1025724883. The reversal of 1025724864 is 4684275201.

It is a super-2 number, since 2×1025724864² = 2104222993255636992, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2670967 + ... + 2671350.

Almost surely, 2^1025724864 is an apocalyptic number.

It is an amenable number.

1025724864 is an abundant number, since it is smaller than the sum of its proper divisors (1688172680).

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

1025724864 is an equidigital number, since it uses as much as digits as its factorization.

1025724864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5342332 (or 5342322 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 39.

The square root of 1025724864 is about 32026.9396602298. The cubic root of 1025724864 is about 1008.5024579888.

The spelling of 1025724864 in words is "one billion, twenty-five million, seven hundred twenty-four thousand, eight hundred sixty-four".