25430980 has 24 divisors (see below), whose sum is σ = 56547288. Its totient is φ = 9573888.

The previous prime is 25430971. The next prime is 25430983. The reversal of 25430980 is 8903452.

25430980 = T₃₁₃ + T₃₁₄ + ... + T₅₆₇.

It can be written as a sum of positive squares in 4 ways, for example, as 749956 + 24681024 = 866^2 + 4968^2 .

It is not an unprimeable number, because it can be changed into a prime (25430983) 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, 37059 + ... + 37738.

It is an arithmetic number, because the mean of its divisors is an integer number (2356137).

Almost surely, 2^25430980 is an apocalyptic number.

25430980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25430980 is an abundant number, since it is smaller than the sum of its proper divisors (31116308).

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

25430980 is a wasteful number, since it uses less digits than its factorization.

25430980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74823 (or 74821 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 25430980 is about 5042.9138402317. The cubic root of 25430980 is about 294.0724673661.

The spelling of 25430980 in words is "twenty-five million, four hundred thirty thousand, nine hundred eighty".