25570541 has 4 divisors (see below), whose sum is σ = 26004000. Its totient is φ = 25137084.

The previous prime is 25570537. The next prime is 25570553. The reversal of 25570541 is 14507552.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25570541 - 2² = 25570537 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25570591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216641 + ... + 216758.

It is an arithmetic number, because the mean of its divisors is an integer number (6501000).

Almost surely, 2^25570541 is an apocalyptic number.

It is an amenable number.

25570541 is a deficient number, since it is larger than the sum of its proper divisors (433459).

25570541 is an equidigital number, since it uses as much as digits as its factorization.

25570541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433458.

The product of its (nonzero) digits is 7000, while the sum is 29.

The square root of 25570541 is about 5056.7322452351. The cubic root of 25570541 is about 294.6094266207.

The spelling of 25570541 in words is "twenty-five million, five hundred seventy thousand, five hundred forty-one".