1001125508 has 24 divisors (see below), whose sum is σ = 1836027648. Its totient is φ = 476734016.

The previous prime is 1001125481. The next prime is 1001125553. The reversal of 1001125508 is 8055211001.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1916 + ... + 44787.

It is an arithmetic number, because the mean of its divisors is an integer number (76501152).

Almost surely, 2^1001125508 is an apocalyptic number.

It is an amenable number.

1001125508 is a deficient number, since it is larger than the sum of its proper divisors (834902140).

1001125508 is a wasteful number, since it uses less digits than its factorization.

1001125508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46963 (or 46961 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 23.

The square root of 1001125508 is about 31640.5674411822. The cubic root of 1001125508 is about 1000.3750286692.

Adding to 1001125508 its reverse (8055211001), we get a palindrome (9056336509).

The spelling of 1001125508 in words is "one billion, one million, one hundred twenty-five thousand, five hundred eight".