25571427 has 8 divisors (see below), whose sum is σ = 38966016. Its totient is φ = 14612232.

The previous prime is 25571411. The next prime is 25571437. The reversal of 25571427 is 72417552.

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

It is not a de Polignac number, because 25571427 - 2⁴ = 25571411 is a prime.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (25571407) 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, 608823 + ... + 608864.

It is an arithmetic number, because the mean of its divisors is an integer number (4870752).

Almost surely, 2^25571427 is an apocalyptic number.

25571427 is a deficient number, since it is larger than the sum of its proper divisors (13394589).

25571427 is a wasteful number, since it uses less digits than its factorization.

25571427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1217697.

The product of its digits is 19600, while the sum is 33.

The square root of 25571427 is about 5056.8198504594. The cubic root of 25571427 is about 294.6128292463.

Adding to 25571427 its reverse (72417552), we get a palindrome (97988979).

The spelling of 25571427 in words is "twenty-five million, five hundred seventy-one thousand, four hundred twenty-seven".