1001010025 has 24 divisors (see below), whose sum is σ = 1330254144. Its totient is φ = 745272000.

The previous prime is 1001010013. The next prime is 1001010053. The reversal of 1001010025 is 5200101001.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-1001010025 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1001009993 and 1001010020.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2251 + ... + 44800.

It is an arithmetic number, because the mean of its divisors is an integer number (55427256).

Almost surely, 2^1001010025 is an apocalyptic number.

It is an amenable number.

1001010025 is a deficient number, since it is larger than the sum of its proper divisors (329244119).

1001010025 is a wasteful number, since it uses less digits than its factorization.

1001010025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47121 (or 47116 counting only the distinct ones).

The product of its (nonzero) digits is 10, while the sum is 10.

The square root of 1001010025 is about 31638.7424686886. The cubic root of 1001010025 is about 1000.3365617135.

Adding to 1001010025 its reverse (5200101001), we get a palindrome (6201111026).

It can be divided in two parts, 100 and 1010025, that multiplied together give a square (101002500 = 10050²).

The spelling of 1001010025 in words is "one billion, one million, ten thousand, twenty-five".