25443480 has 32 divisors (see below), whose sum is σ = 76330800. Its totient is φ = 6784896.

The previous prime is 25443479. The next prime is 25443491. The reversal of 25443480 is 8434452.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105895 + ... + 106134.

Almost surely, 2^25443480 is an apocalyptic number.

25443480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25443480 is an abundant number, since it is smaller than the sum of its proper divisors (50887320).

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

25443480 is a wasteful number, since it uses less digits than its factorization.

25443480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212043 (or 212039 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

The square root of 25443480 is about 5044.1530508104. The cubic root of 25443480 is about 294.1206409421.

Subtracting from 25443480 its reverse (8434452), we obtain a triangular number (17009028 = T₅₈₃₂).

It can be divided in two parts, 254 and 43480, that added together give a palindrome (43734).

The spelling of 25443480 in words is "twenty-five million, four hundred forty-three thousand, four hundred eighty".