25215296471 has 8 divisors (see below), whose sum is σ = 25833490704. Its totient is φ = 24597254080.

The previous prime is 25215296459. The next prime is 25215296593. The reversal of 25215296471 is 17469251252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25215296471 is a prime.

It is a super-3 number, since 3×25215296471³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25215296411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 344981 + ... + 411633.

It is an arithmetic number, because the mean of its divisors is an integer number (3229186338).

Almost surely, 2^25215296471 is an apocalyptic number.

25215296471 is a deficient number, since it is larger than the sum of its proper divisors (618194233).

25215296471 is an equidigital number, since it uses as much as digits as its factorization.

25215296471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75921.

The product of its digits is 302400, while the sum is 44.

The spelling of 25215296471 in words is "twenty-five billion, two hundred fifteen million, two hundred ninety-six thousand, four hundred seventy-one".