25612571 has 4 divisors (see below), whose sum is σ = 25656792. Its totient is φ = 25568352.

The previous prime is 25612537. The next prime is 25612607. The reversal of 25612571 is 17521652.

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 25612571 - 2⁶ = 25612507 is a prime.

It is a super-3 number, since 3×25612571³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25615571) 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, 21230 + ... + 22403.

It is an arithmetic number, because the mean of its divisors is an integer number (6414198).

Almost surely, 2^25612571 is an apocalyptic number.

25612571 is a deficient number, since it is larger than the sum of its proper divisors (44221).

25612571 is an equidigital number, since it uses as much as digits as its factorization.

25612571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44220.

The product of its digits is 4200, while the sum is 29.

The square root of 25612571 is about 5060.8863848144. The cubic root of 25612571 is about 294.7707536219.

The spelling of 25612571 in words is "twenty-five million, six hundred twelve thousand, five hundred seventy-one".