25953140 has 12 divisors (see below), whose sum is σ = 54501636. Its totient is φ = 10381248.

The previous prime is 25953119. The next prime is 25953157. The reversal of 25953140 is 4135952.

It can be written as a sum of positive squares in 2 ways, for example, as 18079504 + 7873636 = 4252^2 + 2806^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 648809 + ... + 648848.

It is an arithmetic number, because the mean of its divisors is an integer number (4541803).

Almost surely, 2^25953140 is an apocalyptic number.

25953140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25953140 is an abundant number, since it is smaller than the sum of its proper divisors (28548496).

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

25953140 is a wasteful number, since it uses less digits than its factorization.

25953140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1297666 (or 1297664 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 25953140 is about 5094.4224402772. The cubic root of 25953140 is about 296.0715221616.

The spelling of 25953140 in words is "twenty-five million, nine hundred fifty-three thousand, one hundred forty".