25275278007 has 24 divisors (see below), whose sum is σ = 41874926496. Its totient is φ = 14390865216.

The previous prime is 25275277981. The next prime is 25275278011. The reversal of 25275278007 is 70087257252.

25275278007 is a `hidden beast` number, since 2 + 527 + 52 + 78 + 0 + 0 + 7 = 666.

It is not a de Polignac number, because 25275278007 - 2¹¹ = 25275275959 is a prime.

It is a super-2 number, since 2×25275278007² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25275278057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 706728 + ... + 741629.

It is an arithmetic number, because the mean of its divisors is an integer number (1744788604).

Almost surely, 2^25275278007 is an apocalyptic number.

25275278007 is a deficient number, since it is larger than the sum of its proper divisors (16599648489).

25275278007 is a wasteful number, since it uses less digits than its factorization.

25275278007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1448647 (or 1448644 counting only the distinct ones).

The product of its (nonzero) digits is 548800, while the sum is 45.

The spelling of 25275278007 in words is "twenty-five billion, two hundred seventy-five million, two hundred seventy-eight thousand, seven".