25350402 has 64 divisors (see below), whose sum is σ = 64963584. Its totient is φ = 6402240.

The previous prime is 25350401. The next prime is 25350407. The reversal of 25350402 is 20405352.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (25350401) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16353 + ... + 17835.

It is an arithmetic number, because the mean of its divisors is an integer number (1015056).

Almost surely, 2^25350402 is an apocalyptic number.

25350402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 25350402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32481792).

25350402 is an abundant number, since it is smaller than the sum of its proper divisors (39613182).

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

25350402 is a wasteful number, since it uses less digits than its factorization.

25350402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1543.

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 25350402 is about 5034.9182714320. The cubic root of 25350402 is about 293.7615494478.

Adding to 25350402 its reverse (20405352), we get a palindrome (45755754).

It can be divided in two parts, 25350 and 402, that added together give a palindrome (25752).

The spelling of 25350402 in words is "twenty-five million, three hundred fifty thousand, four hundred two".