25251230400 has 168 divisors, whose sum is σ = 90376638144. Its totient is φ = 6121497600.

The previous prime is 25251230399. The next prime is 25251230401. The reversal of 25251230400 is 403215252.

It is an interprime number because it is at equal distance from previous prime (25251230399) and next prime (25251230401).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (25251230401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 186322 + ... + 291921.

Almost surely, 2^25251230400 is an apocalyptic number.

25251230400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25251230400 is an abundant number, since it is smaller than the sum of its proper divisors (65125407744).

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

25251230400 is a wasteful number, since it uses less digits than its factorization.

25251230400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478279 (or 478264 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

Adding to 25251230400 its reverse (403215252), we get a palindrome (25654445652).

The spelling of 25251230400 in words is "twenty-five billion, two hundred fifty-one million, two hundred thirty thousand, four hundred".