24999980 has 12 divisors (see below), whose sum is σ = 52500000. Its totient is φ = 9999984.

The previous prime is 24999973. The next prime is 24999983. The reversal of 24999980 is 8999942.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24999983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 624980 + ... + 625019.

It is an arithmetic number, because the mean of its divisors is an integer number (4375000).

Almost surely, 2^24999980 is an apocalyptic number.

24999980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

24999980 is an abundant number, since it is smaller than the sum of its proper divisors (27500020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

24999980 is a wasteful number, since it uses less digits than its factorization.

24999980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250008 (or 1250006 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 50.

The square root of 24999980 is about 4999.9979999996. The cubic root of 24999980 is about 292.4016958475.

The spelling of 24999980 in words is "twenty-four million, nine hundred ninety-nine thousand, nine hundred eighty".