25472681619 has 32 divisors (see below), whose sum is σ = 42392818176. Its totient is φ = 13217368320.

The previous prime is 25472681609. The next prime is 25472681639. The reversal of 25472681619 is 91618627452.

It is not a de Polignac number, because 25472681619 - 2²⁹ = 24935810707 is a prime.

It is a super-2 number, since 2×25472681619² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25472681609) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 139719 + ... + 265455.

It is an arithmetic number, because the mean of its divisors is an integer number (1324775568).

Almost surely, 2^25472681619 is an apocalyptic number.

25472681619 is a deficient number, since it is larger than the sum of its proper divisors (16920136557).

25472681619 is a wasteful number, since it uses less digits than its factorization.

25472681619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126635.

The product of its digits is 1451520, while the sum is 51.

The spelling of 25472681619 in words is "twenty-five billion, four hundred seventy-two million, six hundred eighty-one thousand, six hundred nineteen".