25601043 has 16 divisors (see below), whose sum is σ = 36874656. Its totient is φ = 15705600.

The previous prime is 25601033. The next prime is 25601083. The reversal of 25601043 is 34010652.

It is a happy number.

It is not a de Polignac number, because 25601043 - 2⁵ = 25601011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25601033) 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, 14821 + ... + 16457.

It is an arithmetic number, because the mean of its divisors is an integer number (2304666).

Almost surely, 2^25601043 is an apocalyptic number.

25601043 is a deficient number, since it is larger than the sum of its proper divisors (11273613).

25601043 is a wasteful number, since it uses less digits than its factorization.

25601043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2054.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 25601043 is about 5059.7473257071. The cubic root of 25601043 is about 294.7265223836.

Adding to 25601043 its reverse (34010652), we get a palindrome (59611695).

The spelling of 25601043 in words is "twenty-five million, six hundred one thousand, forty-three".