25316571 has 16 divisors (see below), whose sum is σ = 38709504. Its totient is φ = 14417184.

The previous prime is 25316567. The next prime is 25316573. The reversal of 25316571 is 17561352.

It is not a de Polignac number, because 25316571 - 2² = 25316567 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25316573) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4756 + ... + 8558.

It is an arithmetic number, because the mean of its divisors is an integer number (2419344).

Almost surely, 2^25316571 is an apocalyptic number.

25316571 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

25316571 is a deficient number, since it is larger than the sum of its proper divisors (13392933).

25316571 is a wasteful number, since it uses less digits than its factorization.

25316571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4130.

The product of its digits is 6300, while the sum is 30.

The square root of 25316571 is about 5031.5575123415. The cubic root of 25316571 is about 293.6308129117.

The spelling of 25316571 in words is "twenty-five million, three hundred sixteen thousand, five hundred seventy-one".