1025055040 has 56 divisors (see below), whose sum is σ = 2445178752. Its totient is φ = 409305600.

The previous prime is 1025055011. The next prime is 1025055079. The reversal of 1025055040 is 405505201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204565 + ... + 209515.

Almost surely, 2^1025055040 is an apocalyptic number.

1025055040 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 1025055040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1222589376).

1025055040 is an abundant number, since it is smaller than the sum of its proper divisors (1420123712).

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

1025055040 is an equidigital number, since it uses as much as digits as its factorization.

1025055040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5615 (or 5605 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 1025055040 is about 32016.4807560106. The cubic root of 1025055040 is about 1008.2828844069.

The spelling of 1025055040 in words is "one billion, twenty-five million, fifty-five thousand, forty".