25259140 has 12 divisors (see below), whose sum is σ = 53044236. Its totient is φ = 10103648.

The previous prime is 25259137. The next prime is 25259149. The reversal of 25259140 is 4195252.

It can be written as a sum of positive squares in 2 ways, for example, as 3748096 + 21511044 = 1936^2 + 4638^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25259099 and 25259108.

It is not an unprimeable number, because it can be changed into a prime (25259149) 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, 631459 + ... + 631498.

It is an arithmetic number, because the mean of its divisors is an integer number (4420353).

Almost surely, 2^25259140 is an apocalyptic number.

25259140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25259140 is an abundant number, since it is smaller than the sum of its proper divisors (27785096).

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

25259140 is a wasteful number, since it uses less digits than its factorization.

25259140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1262966 (or 1262964 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 25259140 is about 5025.8471922652. The cubic root of 25259140 is about 293.4086095833.

The spelling of 25259140 in words is "twenty-five million, two hundred fifty-nine thousand, one hundred forty".