25350000 has 180 divisors, whose sum is σ = 88634952. Its totient is φ = 6240000.

The previous prime is 25349981. The next prime is 25350001. The reversal of 25350000 is 5352.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a zygodrome in base 5.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25350001) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1949994 + ... + 1950006.

Almost surely, 2^25350000 is an apocalyptic number.

25350000 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 25350000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44317476).

25350000 is an abundant number, since it is smaller than the sum of its proper divisors (63284952).

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

25350000 is an equidigital number, since it uses as much as digits as its factorization.

25350000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62 (or 23 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 15.

The square root of 25350000 is about 5034.8783500696. The cubic root of 25350000 is about 293.7599966418.

Multiplying 25350000 by its sum of digits (15), we get a square (380250000 = 19500²).

25350000 divided by its sum of digits (15) gives a square (1690000 = 1300²).

Adding to 25350000 its reverse (5352), we get a palindrome (25355352).

The spelling of 25350000 in words is "twenty-five million, three hundred fifty thousand".