25051240 has 32 divisors (see below), whose sum is σ = 56597760. Its totient is φ = 9979200.

The previous prime is 25051219. The next prime is 25051277. The reversal of 25051240 is 4215052.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9685 + ... + 11995.

It is an arithmetic number, because the mean of its divisors is an integer number (1768680).

Almost surely, 2^25051240 is an apocalyptic number.

25051240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25051240 is an abundant number, since it is smaller than the sum of its proper divisors (31546520).

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

25051240 is a wasteful number, since it uses less digits than its factorization.

25051240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2593 (or 2589 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 25051240 is about 5005.1213771496. The cubic root of 25051240 is about 292.6014063862.

Adding to 25051240 its reverse (4215052), we get a palindrome (29266292).

The spelling of 25051240 in words is "twenty-five million, fifty-one thousand, two hundred forty".