25315471 has 4 divisors (see below), whose sum is σ = 25636000. Its totient is φ = 24994944.

The previous prime is 25315457. The next prime is 25315483. The reversal of 25315471 is 17451352.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25315471 - 2⁵ = 25315439 is a prime.

It is a super-3 number, since 3×25315471³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25315421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160146 + ... + 160303.

It is an arithmetic number, because the mean of its divisors is an integer number (6409000).

Almost surely, 2^25315471 is an apocalyptic number.

25315471 is a deficient number, since it is larger than the sum of its proper divisors (320529).

25315471 is an equidigital number, since it uses as much as digits as its factorization.

25315471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320528.

The product of its digits is 4200, while the sum is 28.

The square root of 25315471 is about 5031.4482010650. The cubic root of 25315471 is about 293.6265601165.

The spelling of 25315471 in words is "twenty-five million, three hundred fifteen thousand, four hundred seventy-one".