25450491 has 8 divisors (see below), whose sum is σ = 37018944. Its totient is φ = 15424520.

The previous prime is 25450471. The next prime is 25450499. The reversal of 25450491 is 19405452.

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 25450491 - 2⁵ = 25450459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25450499) 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, 385581 + ... + 385646.

It is an arithmetic number, because the mean of its divisors is an integer number (4627368).

Almost surely, 2^25450491 is an apocalyptic number.

25450491 is a deficient number, since it is larger than the sum of its proper divisors (11568453).

25450491 is a wasteful number, since it uses less digits than its factorization.

25450491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771241.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 25450491 is about 5044.8479659946. The cubic root of 25450491 is about 294.1476536311.

The spelling of 25450491 in words is "twenty-five million, four hundred fifty thousand, four hundred ninety-one".