25471272490 has 32 divisors (see below), whose sum is σ = 49134729600. Its totient is φ = 9482134464.

The previous prime is 25471272443. The next prime is 25471272503. The reversal of 25471272490 is 9427217452.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1488040 + ... + 1505059.

It is an arithmetic number, because the mean of its divisors is an integer number (1535460300).

Almost surely, 2^25471272490 is an apocalyptic number.

25471272490 is a deficient number, since it is larger than the sum of its proper divisors (23663457110).

25471272490 is a wasteful number, since it uses less digits than its factorization.

25471272490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2993166.

The product of its (nonzero) digits is 282240, while the sum is 43.

The spelling of 25471272490 in words is "twenty-five billion, four hundred seventy-one million, two hundred seventy-two thousand, four hundred ninety".