25212367400 has 96 divisors (see below), whose sum is σ = 64581446880. Its totient is φ = 9077280000.

The previous prime is 25212367387. The next prime is 25212367409. The reversal of 25212367400 is 476321252.

It is not an unprimeable number, because it can be changed into a prime (25212367409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 165467 + ... + 278933.

It is an arithmetic number, because the mean of its divisors is an integer number (672723405).

Almost surely, 2^25212367400 is an apocalyptic number.

25212367400 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 25212367400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32290723440).

25212367400 is an abundant number, since it is smaller than the sum of its proper divisors (39369079480).

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

25212367400 is a wasteful number, since it uses less digits than its factorization.

25212367400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113595 (or 113586 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

Adding to 25212367400 its reverse (476321252), we get a palindrome (25688688652).

The spelling of 25212367400 in words is "twenty-five billion, two hundred twelve million, three hundred sixty-seven thousand, four hundred".