1025757840 has 160 divisors (see below), whose sum is σ = 3307288320. Its totient is φ = 262678528.

The previous prime is 1025757829. The next prime is 1025757851. The reversal of 1025757840 is 487575201.

It is an interprime number because it is at equal distance from previous prime (1025757829) and next prime (1025757851).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2039029 + ... + 2039531.

It is an arithmetic number, because the mean of its divisors is an integer number (20670552).

Almost surely, 2^1025757840 is an apocalyptic number.

1025757840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1025757840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1653644160).

1025757840 is an abundant number, since it is smaller than the sum of its proper divisors (2281530480).

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

1025757840 is a wasteful number, since it uses less digits than its factorization.

1025757840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841 (or 835 counting only the distinct ones).

The product of its (nonzero) digits is 78400, while the sum is 39.

The square root of 1025757840 is about 32027.4544726864. The cubic root of 1025757840 is about 1008.5132653121.

The spelling of 1025757840 in words is "one billion, twenty-five million, seven hundred fifty-seven thousand, eight hundred forty".