25120641 has 64 divisors (see below), whose sum is σ = 45158400. Its totient is φ = 12047616.

The previous prime is 25120639. The next prime is 25120651. The reversal of 25120641 is 14602152.

It is not a de Polignac number, because 25120641 - 2¹ = 25120639 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25120621) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 150340 + ... + 150506.

It is an arithmetic number, because the mean of its divisors is an integer number (705600).

Almost surely, 2^25120641 is an apocalyptic number.

25120641 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

25120641 is a deficient number, since it is larger than the sum of its proper divisors (20037759).

25120641 is a wasteful number, since it uses less digits than its factorization.

25120641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238.

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

The square root of 25120641 is about 5012.0495807603. The cubic root of 25120641 is about 292.8713611748.

Adding to 25120641 its reverse (14602152), we get a palindrome (39722793).

The spelling of 25120641 in words is "twenty-five million, one hundred twenty thousand, six hundred forty-one".