25705007 has 4 divisors (see below), whose sum is σ = 26822640. Its totient is φ = 24587376.

The previous prime is 25704977. The next prime is 25705027. The reversal of 25705007 is 70050752.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25705007 - 2¹² = 25700911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25705027) 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, 558782 + ... + 558827.

It is an arithmetic number, because the mean of its divisors is an integer number (6705660).

Almost surely, 2^25705007 is an apocalyptic number.

25705007 is a deficient number, since it is larger than the sum of its proper divisors (1117633).

25705007 is a wasteful number, since it uses less digits than its factorization.

25705007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1117632.

The product of its (nonzero) digits is 2450, while the sum is 26.

The square root of 25705007 is about 5070.0105522573. The cubic root of 25705007 is about 295.1249379820.

Adding to 25705007 its reverse (70050752), we get a palindrome (95755759).

The spelling of 25705007 in words is "twenty-five million, seven hundred five thousand, seven".