25498121 has 8 divisors (see below), whose sum is σ = 27878688. Its totient is φ = 23128000.

The previous prime is 25498117. The next prime is 25498139. The reversal of 25498121 is 12189452.

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 25498121 - 2² = 25498117 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25498621) 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, 3041 + ... + 7761.

It is an arithmetic number, because the mean of its divisors is an integer number (3484836).

Almost surely, 2^25498121 is an apocalyptic number.

It is an amenable number.

25498121 is a deficient number, since it is larger than the sum of its proper divisors (2380567).

25498121 is a wasteful number, since it uses less digits than its factorization.

25498121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5223.

The product of its digits is 5760, while the sum is 32.

The square root of 25498121 is about 5049.5664170303. The cubic root of 25498121 is about 294.3310361032.

The spelling of 25498121 in words is "twenty-five million, four hundred ninety-eight thousand, one hundred twenty-one".