25025002900 has 18 divisors (see below), whose sum is σ = 54304256510. Its totient is φ = 10010001120.

The previous prime is 25025002883. The next prime is 25025002901. The reversal of 25025002900 is 920052052.

It can be written as a sum of positive squares in 3 ways, for example, as 550277764 + 24474725136 = 23458^2 + 156444^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25025002901) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 125124915 + ... + 125125114.

Almost surely, 2^25025002900 is an apocalyptic number.

25025002900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25025002900 is an abundant number, since it is smaller than the sum of its proper divisors (29279253610).

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

25025002900 is a wasteful number, since it uses less digits than its factorization.

25025002900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250250043 (or 250250036 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 25025002900 its reverse (920052052), we get a palindrome (25945054952).

The spelling of 25025002900 in words is "twenty-five billion, twenty-five million, two thousand, nine hundred".