1001251004 has 24 divisors (see below), whose sum is σ = 1918961520. Its totient is φ = 454281984.

The previous prime is 1001251003. The next prime is 1001251007. The reversal of 1001251004 is 4001521001.

It is a super-2 number, since 2×1001251004² = 2005007146022016032, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1001251004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001251003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160109 + ... + 166244.

It is an arithmetic number, because the mean of its divisors is an integer number (79956730).

Almost surely, 2^1001251004 is an apocalyptic number.

It is an amenable number.

1001251004 is a deficient number, since it is larger than the sum of its proper divisors (917710516).

1001251004 is a wasteful number, since it uses less digits than its factorization.

1001251004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326429 (or 326427 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 1001251004 is about 31642.5505293110. The cubic root of 1001251004 is about 1000.4168275640.

Adding to 1001251004 its reverse (4001521001), we get a palindrome (5002772005).

It can be divided in two parts, 10012 and 51004, that added together give a palindrome (61016).

The spelling of 1001251004 in words is "one billion, one million, two hundred fifty-one thousand, four".