1025403005 has 48 divisors (see below), whose sum is σ = 1387964592. Its totient is φ = 726528000.

The previous prime is 1025402993. The next prime is 1025403011. The reversal of 1025403005 is 5003045201.

It can be written as a sum of positive squares in 8 ways, for example, as 183358681 + 842044324 = 13541^2 + 29018^2 .

It is not a de Polignac number, because 1025403005 - 2¹² = 1025398909 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5927099 + ... + 5927271.

It is an arithmetic number, because the mean of its divisors is an integer number (28915929).

Almost surely, 2^1025403005 is an apocalyptic number.

It is an amenable number.

1025403005 is a deficient number, since it is larger than the sum of its proper divisors (362561587).

1025403005 is a wasteful number, since it uses less digits than its factorization.

1025403005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398 (or 387 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 1025403005 is about 32021.9144493267. The cubic root of 1025403005 is about 1008.3969620086.

Adding to 1025403005 its reverse (5003045201), we get a palindrome (6028448206).

The spelling of 1025403005 in words is "one billion, twenty-five million, four hundred three thousand, five".