1025510001 has 4 divisors (see below), whose sum is σ = 1367346672. Its totient is φ = 683673332.

The previous prime is 1025509987. The next prime is 1025510011. The reversal of 1025510001 is 1000155201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1025510001 - 2²⁹ = 488639089 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1025510011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170918331 + ... + 170918336.

It is an arithmetic number, because the mean of its divisors is an integer number (341836668).

Almost surely, 2^1025510001 is an apocalyptic number.

It is an amenable number.

1025510001 is a deficient number, since it is larger than the sum of its proper divisors (341836671).

1025510001 is an equidigital number, since it uses as much as digits as its factorization.

1025510001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341836670.

The product of its (nonzero) digits is 50, while the sum is 15.

The square root of 1025510001 is about 32023.5850741293. The cubic root of 1025510001 is about 1008.4320346218.

Adding to 1025510001 its reverse (1000155201), we get a palindrome (2025665202).

The spelling of 1025510001 in words is "one billion, twenty-five million, five hundred ten thousand, one".