25591013 has 8 divisors (see below), whose sum is σ = 30037632. Its totient is φ = 21342096.

The previous prime is 25591009. The next prime is 25591031. The reversal of 25591013 is 31019552.

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

It is a cyclic number.

It is not a de Polignac number, because 25591013 - 2² = 25591009 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 (25591003) 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, 49145 + ... + 49662.

It is an arithmetic number, because the mean of its divisors is an integer number (3754704).

Almost surely, 2^25591013 is an apocalyptic number.

It is an amenable number.

25591013 is a deficient number, since it is larger than the sum of its proper divisors (4446619).

25591013 is an equidigital number, since it uses as much as digits as its factorization.

25591013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98851.

The product of its (nonzero) digits is 1350, while the sum is 26.

The square root of 25591013 is about 5058.7560723957. The cubic root of 25591013 is about 294.6880279474.

The spelling of 25591013 in words is "twenty-five million, five hundred ninety-one thousand, thirteen".