1025388936 has 256 divisors, whose sum is σ = 3392928000. Its totient is φ = 282839040.

The previous prime is 1025388911. The next prime is 1025388943. The reversal of 1025388936 is 6398835201.

It is a happy number.

1025388936 is a `hidden beast` number, since 1 + 0 + 2 + 538 + 89 + 36 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1025388891 and 1025388900.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2748846 + ... + 2749218.

It is an arithmetic number, because the mean of its divisors is an integer number (13253625).

Almost surely, 2^1025388936 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 1025388936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1696464000).

1025388936 is an abundant number, since it is smaller than the sum of its proper divisors (2367539064).

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

1025388936 is a wasteful number, since it uses less digits than its factorization.

1025388936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501 (or 491 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 1025388936 is about 32021.6947708893. The cubic root of 1025388936 is about 1008.3923500978.

The spelling of 1025388936 in words is "one billion, twenty-five million, three hundred eighty-eight thousand, nine hundred thirty-six".