25048991 has 8 divisors (see below), whose sum is σ = 27993168. Its totient is φ = 22216000.

The previous prime is 25048987. The next prime is 25048993. The reversal of 25048991 is 19984052.

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 25048991 - 2² = 25048987 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 (25048993) 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, 27320 + ... + 28221.

It is an arithmetic number, because the mean of its divisors is an integer number (3499146).

Almost surely, 2^25048991 is an apocalyptic number.

25048991 is a deficient number, since it is larger than the sum of its proper divisors (2944177).

25048991 is a wasteful number, since it uses less digits than its factorization.

25048991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55593.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 25048991 is about 5004.8967022307. The cubic root of 25048991 is about 292.5926499301.

The spelling of 25048991 in words is "twenty-five million, forty-eight thousand, nine hundred ninety-one".