25162140 has 48 divisors (see below), whose sum is σ = 72888480. Its totient is φ = 6478080.

The previous prime is 25162139. The next prime is 25162141. The reversal of 25162140 is 4126152.

It is an interprime number because it is at equal distance from previous prime (25162139) and next prime (25162141).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25162141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5491 + ... + 8970.

It is an arithmetic number, because the mean of its divisors is an integer number (1518510).

Almost surely, 2^25162140 is an apocalyptic number.

25162140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25162140 is an abundant number, since it is smaller than the sum of its proper divisors (47726340).

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

25162140 is a wasteful number, since it uses less digits than its factorization.

25162140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14502 (or 14500 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 25162140 is about 5016.1877955276. The cubic root of 25162140 is about 293.0325457835.

Adding to 25162140 its reverse (4126152), we get a palindrome (29288292).

It can be divided in two parts, 2516 and 2140, that added together give a triangular number (4656 = T₉₆).

The spelling of 25162140 in words is "twenty-five million, one hundred sixty-two thousand, one hundred forty".