1025802004 has 6 divisors (see below), whose sum is σ = 1795153514. Its totient is φ = 512901000.

The previous prime is 1025801999. The next prime is 1025802073. The reversal of 1025802004 is 4002085201.

It can be written as a sum of positive squares in only one way, i.e., 747913104 + 277888900 = 27348^2 + 16670^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128225247 + ... + 128225254.

Almost surely, 2^1025802004 is an apocalyptic number.

It is an amenable number.

1025802004 is a deficient number, since it is larger than the sum of its proper divisors (769351510).

1025802004 is a wasteful number, since it uses less digits than its factorization.

1025802004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256450505 (or 256450503 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 1025802004 is about 32028.1439362321. The cubic root of 1025802004 is about 1008.5277389494.

Adding to 1025802004 its reverse (4002085201), we get a palindrome (5027887205).

The spelling of 1025802004 in words is "one billion, twenty-five million, eight hundred two thousand, four".