25139080 has 16 divisors (see below), whose sum is σ = 56563020. Its totient is φ = 10055616.

The previous prime is 25139053. The next prime is 25139087. The reversal of 25139080 is 8093152.

It can be written as a sum of positive squares in 2 ways, for example, as 24423364 + 715716 = 4942^2 + 846^2 .

It is not an unprimeable number, because it can be changed into a prime (25139087) 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, 314199 + ... + 314278.

Almost surely, 2^25139080 is an apocalyptic number.

25139080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25139080 is an abundant number, since it is smaller than the sum of its proper divisors (31423940).

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

25139080 is a wasteful number, since it uses less digits than its factorization.

25139080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628488 (or 628484 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 25139080 is about 5013.8887103724. Note that the first 3 decimals coincide. The cubic root of 25139080 is about 292.9430012558.

The spelling of 25139080 in words is "twenty-five million, one hundred thirty-nine thousand, eighty".