25071400400 has 60 divisors (see below), whose sum is σ = 60767193612. Its totient is φ = 9939793920.

The previous prime is 25071400399. The next prime is 25071400457. The reversal of 25071400400 is 400417052.

It can be written as a sum of positive squares in 6 ways, for example, as 5735941696 + 19335458704 = 75736^2 + 139052^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 232139 + ... + 322538.

Almost surely, 2^25071400400 is an apocalyptic number.

25071400400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25071400400 is an abundant number, since it is smaller than the sum of its proper divisors (35695793212).

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

25071400400 is a wasteful number, since it uses less digits than its factorization.

25071400400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554808 (or 554797 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 23.

Adding to 25071400400 its reverse (400417052), we get a palindrome (25471817452).

The spelling of 25071400400 in words is "twenty-five billion, seventy-one million, four hundred thousand, four hundred".