25001011 has 16 divisors (see below), whose sum is σ = 29723904. Its totient is φ = 20581344.

The previous prime is 25000991. The next prime is 25001029. The reversal of 25001011 is 11010052.

It is a happy number.

It is not a de Polignac number, because 25001011 - 2⁷ = 25000883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25001111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20916 + ... + 22078.

It is an arithmetic number, because the mean of its divisors is an integer number (1857744).

Almost surely, 2^25001011 is an apocalyptic number.

25001011 is a deficient number, since it is larger than the sum of its proper divisors (4722893).

25001011 is a wasteful number, since it uses less digits than its factorization.

25001011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1290.

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

The square root of 25001011 is about 5000.1010989779. The cubic root of 25001011 is about 292.4057153441.

Adding to 25001011 its reverse (11010052), we get a palindrome (36011063).

The spelling of 25001011 in words is "twenty-five million, one thousand, eleven".