25425400 has 192 divisors, whose sum is σ = 79994880. Its totient is φ = 7257600.

The previous prime is 25425391. The next prime is 25425403. The reversal of 25425400 is 452452.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25425403) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 200137 + ... + 200263.

It is an arithmetic number, because the mean of its divisors is an integer number (416640).

Almost surely, 2^25425400 is an apocalyptic number.

25425400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25425400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39997440).

25425400 is an abundant number, since it is smaller than the sum of its proper divisors (54569480).

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

25425400 is a wasteful number, since it uses less digits than its factorization.

25425400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174 (or 165 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 25425400 is about 5042.3605583100. The cubic root of 25425400 is about 294.0509575856.

Adding to 25425400 its reverse (452452), we get a palindrome (25877852).

It can be divided in two parts, 254 and 25400, that multiplied together give a square (6451600 = 2540²).

The spelling of 25425400 in words is "twenty-five million, four hundred twenty-five thousand, four hundred".