25434432 has 112 divisors (see below), whose sum is σ = 76809600. Its totient is φ = 8248320.

The previous prime is 25434427. The next prime is 25434433. The reversal of 25434432 is 23443452.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 25434396 and 25434405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25434433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70669 + ... + 71027.

It is an arithmetic number, because the mean of its divisors is an integer number (685800).

Almost surely, 2^25434432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25434432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38404800).

25434432 is an abundant number, since it is smaller than the sum of its proper divisors (51375168).

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

25434432 is a wasteful number, since it uses less digits than its factorization.

25434432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421 (or 405 counting only the distinct ones).

The product of its digits is 11520, while the sum is 27.

The square root of 25434432 is about 5043.2560910586. The cubic root of 25434432 is about 294.0857725583.

Adding to 25434432 its reverse (23443452), we get a palindrome (48877884).

The spelling of 25434432 in words is "twenty-five million, four hundred thirty-four thousand, four hundred thirty-two".