1001525251 has 2 divisors, whose sum is σ = 1001525252. Its totient is φ = 1001525250.

The previous prime is 1001525221. The next prime is 1001525257. The reversal of 1001525251 is 1525251001.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1001525251 - 2⁷ = 1001525123 is a prime.

It is a super-2 number, since 2×1001525251² = 2006105656781226002, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1001525257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500762625 + 500762626.

It is an arithmetic number, because the mean of its divisors is an integer number (500762626).

Almost surely, 2^1001525251 is an apocalyptic number.

1001525251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001525251 is an equidigital number, since it uses as much as digits as its factorization.

1001525251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 500, while the sum is 22.

The square root of 1001525251 is about 31646.8837486410. The cubic root of 1001525251 is about 1000.5081587310.

Adding to 1001525251 its reverse (1525251001), we get a palindrome (2526776252).

The spelling of 1001525251 in words is "one billion, one million, five hundred twenty-five thousand, two hundred fifty-one".