25290849 has 8 divisors (see below), whose sum is σ = 35704800. Its totient is φ = 15868736.

The previous prime is 25290833. The next prime is 25290877. The reversal of 25290849 is 94809252.

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 25290849 - 2⁴ = 25290833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25290829) 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, 247899 + ... + 248000.

It is an arithmetic number, because the mean of its divisors is an integer number (4463100).

Almost surely, 2^25290849 is an apocalyptic number.

It is an amenable number.

25290849 is a deficient number, since it is larger than the sum of its proper divisors (10413951).

25290849 is a wasteful number, since it uses less digits than its factorization.

25290849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495919.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 25290849 is about 5029.0007953867. Note that the first 3 decimals coincide. The cubic root of 25290849 is about 293.5313348383.

The spelling of 25290849 in words is "twenty-five million, two hundred ninety thousand, eight hundred forty-nine".