24999998 has 4 divisors (see below), whose sum is σ = 37500000. Its totient is φ = 12499998.

The previous prime is 24999983. The next prime is 25000009. The reversal of 24999998 is 89999942.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89999942 = 2 ⋅44999971.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6249998 + ... + 6250001.

It is an arithmetic number, because the mean of its divisors is an integer number (9375000).

Almost surely, 2^24999998 is an apocalyptic number.

24999998 is a deficient number, since it is larger than the sum of its proper divisors (12500002).

24999998 is a wasteful number, since it uses less digits than its factorization.

24999998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12500001.

The product of its digits is 3779136, while the sum is 59.

The square root of 24999998 is about 4999.9998000000. Note that the first 3 decimals coincide. The cubic root of 24999998 is about 292.4017660239.

The spelling of 24999998 in words is "twenty-four million, nine hundred ninety-nine thousand, nine hundred ninety-eight".