25906270090 has 16 divisors (see below), whose sum is σ = 46636806888. Its totient is φ = 10361281216.

The previous prime is 25906270067. The next prime is 25906270109. The reversal of 25906270090 is 9007260952.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 18420732729 + 7485537361 = 135723^2 + 86519^2 .

It is a super-2 number, since 2×25906270090² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62077 + ... + 235936.

Almost surely, 2^25906270090 is an apocalyptic number.

25906270090 is a deficient number, since it is larger than the sum of its proper divisors (20730536798).

25906270090 is a wasteful number, since it uses less digits than its factorization.

25906270090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306713.

The product of its (nonzero) digits is 68040, while the sum is 40.

The spelling of 25906270090 in words is "twenty-five billion, nine hundred six million, two hundred seventy thousand, ninety".