1025263636 has 48 divisors (see below), whose sum is σ = 1953504000. Its totient is φ = 469162368.

The previous prime is 1025263627. The next prime is 1025263639. The reversal of 1025263636 is 6363625201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025263639) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 417765 + ... + 420211.

It is an arithmetic number, because the mean of its divisors is an integer number (40698000).

Almost surely, 2^1025263636 is an apocalyptic number.

It is an amenable number.

1025263636 is a deficient number, since it is larger than the sum of its proper divisors (928240364).

1025263636 is a wasteful number, since it uses less digits than its factorization.

1025263636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2656 (or 2654 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 34.

The square root of 1025263636 is about 32019.7382250386. The cubic root of 1025263636 is about 1008.3512740716.

Adding to 1025263636 its reverse (6363625201), we get a palindrome (7388888837).

The spelling of 1025263636 in words is "one billion, twenty-five million, two hundred sixty-three thousand, six hundred thirty-six".