25424685 has 80 divisors (see below), whose sum is σ = 53665920. Its totient is φ = 11352960.

The previous prime is 25424669. The next prime is 25424687. The reversal of 25424685 is 58642452.

It is a happy number.

It is not a de Polignac number, because 25424685 - 2⁴ = 25424669 is a prime.

Its product of digits (76800) is a multiple of the sum of its prime factors (480).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25424687) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 57696 + ... + 58134.

It is an arithmetic number, because the mean of its divisors is an integer number (670824).

Almost surely, 2^25424685 is an apocalyptic number.

It is an amenable number.

25424685 is an abundant number, since it is smaller than the sum of its proper divisors (28241235).

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

25424685 is a wasteful number, since it uses less digits than its factorization.

25424685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480 (or 471 counting only the distinct ones).

The product of its digits is 76800, while the sum is 36.

The square root of 25424685 is about 5042.2896584786. The cubic root of 25424685 is about 294.0482011766.

It can be divided in two parts, 2542 and 4685, that added together give a palindrome (7227).

The spelling of 25424685 in words is "twenty-five million, four hundred twenty-four thousand, six hundred eighty-five".